My First Imp (First Sprint this Year!)

Show off and tells us about your car, finished or a work in progress

Moderator: Keith 'Supaimpy' Laming

User avatar
pubcrawler
Posts: 1086
Joined: Wed Jan 25, 2012 10:26 am
Club Member: Yes
Car Model: 1965 Hillman Imp, 1971 Austin Healey Sprite MkIV
Location: West Midlands

Re: My First Imp (At last better oil pressure!)

Post by pubcrawler » Wed Oct 26, 2016 4:39 pm

ImpManiac wrote:The car looks great, Martin! :D
IM 8)
Awww, thanks Paul 8)
Does look good on photo's and better from a distance :lol:
Owner of the Green Heartbeat Imp from Aidensfield!
Martin Parkes.
User avatar
ImpManiac
Posts: 9310
Joined: Tue Feb 01, 2005 3:48 pm
Club Member: Yes
Car Model: Singer Chamois
Location: Houghton Regis, Bedfordshire

Re: My First Imp (At last better oil pressure!)

Post by ImpManiac » Thu Oct 27, 2016 12:08 pm

It looks good up close too. I saw your car at Gaydon, I think, probably quite a while ago now. :D

IM 8)
Paul Harrison
imp: a small demon : FIEND : a mischievous child : URCHIN
maniac: Raging with disordered intellect: affected with mania: MAD
User avatar
pubcrawler
Posts: 1086
Joined: Wed Jan 25, 2012 10:26 am
Club Member: Yes
Car Model: 1965 Hillman Imp, 1971 Austin Healey Sprite MkIV
Location: West Midlands

Re: My First Imp (Lots of Interest Again!)

Post by pubcrawler » Tue Nov 15, 2016 12:50 pm

As the organiser of Classic Car Shows, for Owen Motoring Club, I had decided to leave my green thing at home this year and not show it at the NEC :o
Fellow club members insisited I take it along to the NEC again and of course as usual there was lots of interest in it :D
Mine was the cheapest car on our stand and got just as much attention as the pristine Escort Mk2 Harrier which has had thousands spent on it :wink:
A very enjoyable 4 days, met some interesting people with great Imp stories and was good to meet up with fellow Imp Club members on my stand and theirs 8)
Attachments
NEC 2016 001.JPG
NEC 2016 007.JPG
Owner of the Green Heartbeat Imp from Aidensfield!
Martin Parkes.
User avatar
ImpManiac
Posts: 9310
Joined: Tue Feb 01, 2005 3:48 pm
Club Member: Yes
Car Model: Singer Chamois
Location: Houghton Regis, Bedfordshire

Re: My First Imp (Lots of Interest Again!)

Post by ImpManiac » Mon Nov 28, 2016 11:15 am

Glad you enjoyed the show, Martin. :D Your Imp looks good.

IM 8)
Paul Harrison
imp: a small demon : FIEND : a mischievous child : URCHIN
maniac: Raging with disordered intellect: affected with mania: MAD
User avatar
pubcrawler
Posts: 1086
Joined: Wed Jan 25, 2012 10:26 am
Club Member: Yes
Car Model: 1965 Hillman Imp, 1971 Austin Healey Sprite MkIV
Location: West Midlands

Re: My First Imp (Pleased with my result!)

Post by pubcrawler » Wed Jan 04, 2017 2:47 pm

Did an all forward autotest with my Nephew navigating the day after Boxing Day :o
More of a test to see how it revved and drove in anger, so as long as it's kept it above 3,800 rpm it goes very well :D
I did one wrong test and hit some cones on others and still finished 3rd in class out of 10 in the rear wheel drive class 8)
The 3 tests were done 3 times

MX5......76 83 73 66 77 93 67 84 97..........(716 secs) 1st
MX5 ......67 92 76 74 87 77 68 87 89.........(717 secs) 2nd
IMP ......74 99 94 72 81 99 80 79 88.........(766 secs) 3rd
Attachments
15780762_1840888416193599_4409958627040276878_n.jpg
15740843_1840888702860237_8124168005194962470_n.jpg
15726974_1840923786190062_4672717788805198739_n.jpg
Owner of the Green Heartbeat Imp from Aidensfield!
Martin Parkes.
User avatar
ImpManiac
Posts: 9310
Joined: Tue Feb 01, 2005 3:48 pm
Club Member: Yes
Car Model: Singer Chamois
Location: Houghton Regis, Bedfordshire

Re: My First Imp (Pleased with my result!)

Post by ImpManiac » Thu Jan 05, 2017 1:48 pm

Well done indeed, Martin and nephew! 8) Imps can do really well in autotests, as you have shown, owing to their outstanding agility. Third is a great achievement!

IM 8)
Paul Harrison
imp: a small demon : FIEND : a mischievous child : URCHIN
maniac: Raging with disordered intellect: affected with mania: MAD
User avatar
pubcrawler
Posts: 1086
Joined: Wed Jan 25, 2012 10:26 am
Club Member: Yes
Car Model: 1965 Hillman Imp, 1971 Austin Healey Sprite MkIV
Location: West Midlands

Re: My First Imp (Such a lot of interest!)

Post by pubcrawler » Tue May 02, 2017 7:04 am

Probably the cheapest car on show there on Sunday at Stratford upon Avon's Festival of Motoring :D
Never been to this event before, lots of people, loads of classics in five closed roads and again lots of interest in my green thing :o
Love listening to stories and one chap told me a friend of his worked at Linwood :shock:
Every Friday the wives would meet their husbands out of work to take their pay packet from them to prevent them spending it all in the pub that night :lol:
Attachments
IMG_4183.JPG
IMG_4175.JPG
IMG_4176.JPG
IMG_4184.JPG
Owner of the Green Heartbeat Imp from Aidensfield!
Martin Parkes.
User avatar
pubcrawler
Posts: 1086
Joined: Wed Jan 25, 2012 10:26 am
Club Member: Yes
Car Model: 1965 Hillman Imp, 1971 Austin Healey Sprite MkIV
Location: West Midlands

Re: My First Imp (Such a lot of interest!)

Post by pubcrawler » Tue May 02, 2017 7:06 am

Love this photo :D
Photo bombed by my Wife having a coffee :lol:
Attachments
IMG_0074a (2).jpg
Owner of the Green Heartbeat Imp from Aidensfield!
Martin Parkes.
User avatar
617sqn
Posts: 4512
Joined: Fri Dec 05, 2003 11:17 pm
Club Member: Yes
Car Model: Hillman Imp 1972
Location: Sussex, England.

Re: My First Imp (Such a lot of interest!)

Post by 617sqn » Tue May 02, 2017 9:48 am

Great images, Martin. And I'm jealous because I'm not allowed to drive at the moment following surgery. I think that hurts more than the wounds :D

Andy G
Member No. 7500, and Stan's best mate.
User avatar
pubcrawler
Posts: 1086
Joined: Wed Jan 25, 2012 10:26 am
Club Member: Yes
Car Model: 1965 Hillman Imp, 1971 Austin Healey Sprite MkIV
Location: West Midlands

Re: My First Imp (Such a lot of interest!)

Post by pubcrawler » Tue May 02, 2017 10:06 am

617sqn wrote: I'm not allowed to drive at the moment following surgery.Andy G
Sorry to hear that Andy, hope you'll soon be back behind the wheel & fully recovered :)
Owner of the Green Heartbeat Imp from Aidensfield!
Martin Parkes.
User avatar
ImpManiac
Posts: 9310
Joined: Tue Feb 01, 2005 3:48 pm
Club Member: Yes
Car Model: Singer Chamois
Location: Houghton Regis, Bedfordshire

Re: My First Imp (Such a lot of interest!)

Post by ImpManiac » Fri May 05, 2017 4:23 pm

Great photos, Martin! 8) It sounds as though Stratford was an enjoyable show. Your car looks superb, as ever!

IM 8)
Paul Harrison
imp: a small demon : FIEND : a mischievous child : URCHIN
maniac: Raging with disordered intellect: affected with mania: MAD
User avatar
Lars Hagermark
Posts: 1350
Joined: Mon Apr 03, 2006 9:47 pm
Club Member: Yes
Car Model: 69 Californian (998) and two 1964 Imps (projects)
Location: 25 km s.w. of Stockholm, Sweden (overseas contact).

Re: My First Imp (Such a lot of interest!)

Post by Lars Hagermark » Fri May 05, 2017 9:02 pm

Very nice car. No wonder it caught a lot of interest. :)
Overseas contact, Sweden. -69 Cali (998), 2 -64 Imps in need of "some" work.
Life is full of solutions waiting to be found.
User avatar
pubcrawler
Posts: 1086
Joined: Wed Jan 25, 2012 10:26 am
Club Member: Yes
Car Model: 1965 Hillman Imp, 1971 Austin Healey Sprite MkIV
Location: West Midlands

Re: My First Imp (Such a lot of interest!)

Post by pubcrawler » Fri May 05, 2017 10:30 pm

Lars Hagermark wrote:Very nice car. No wonder it caught a lot of interest. :)
Thanks Lars, very nice of you to say so 8)
Owner of the Green Heartbeat Imp from Aidensfield!
Martin Parkes.
User avatar
pubcrawler
Posts: 1086
Joined: Wed Jan 25, 2012 10:26 am
Club Member: Yes
Car Model: 1965 Hillman Imp, 1971 Austin Healey Sprite MkIV
Location: West Midlands

Re: My First Imp (Such a lot of interest!)

Post by pubcrawler » Fri May 05, 2017 10:32 pm

ImpManiac wrote:Great photos, Martin! 8) It sounds as though Stratford was an enjoyable show. Your car looks superb, as ever!IM 8)
Thanks Paul, yes I really enjoyed Stratford and the people. Roll on next year :D
Owner of the Green Heartbeat Imp from Aidensfield!
Martin Parkes.
User avatar
Dave ' Linwood ' Lane
Posts: 7789
Joined: Sat Apr 15, 2006 3:55 pm
Club Member: Yes
Car Model: ,n/a

Re: My First Imp (Such a lot of interest!)

Post by Dave ' Linwood ' Lane » Fri May 05, 2017 10:33 pm

I always see the plate as ENV ( Envy ) not EVN for some reason.
Maybe its sub conscious :D :mrgreen:
Formally known as " Noddy "
User avatar
pubcrawler
Posts: 1086
Joined: Wed Jan 25, 2012 10:26 am
Club Member: Yes
Car Model: 1965 Hillman Imp, 1971 Austin Healey Sprite MkIV
Location: West Midlands

Re: My First Imp (Such a lot of interest!)

Post by pubcrawler » Sat May 06, 2017 8:06 am

Dave ' Linwood ' Lane wrote:I always see the plate as ENV ( Envy ) not EVN for some reason.
Maybe its sub conscious :D :mrgreen:
:lol: :lol: :roll: :o :wink:
Owner of the Green Heartbeat Imp from Aidensfield!
Martin Parkes.
User avatar
pubcrawler
Posts: 1086
Joined: Wed Jan 25, 2012 10:26 am
Club Member: Yes
Car Model: 1965 Hillman Imp, 1971 Austin Healey Sprite MkIV
Location: West Midlands

Re: My First Imp (Claim to fame..on film!)

Post by pubcrawler » Sat May 06, 2017 8:36 am

Following last weekends great Stratford Festival of Motoring I've found a short 3 min film :o
My green thing is at 1 min 48 secs and Richards is in the background at 2 min 52 secs 8)

http://www.stratforward.co.uk/files/fil ... sd360p.mp4
Owner of the Green Heartbeat Imp from Aidensfield!
Martin Parkes.
User avatar
Dave ' Linwood ' Lane
Posts: 7789
Joined: Sat Apr 15, 2006 3:55 pm
Club Member: Yes
Car Model: ,n/a

Re: My First Imp (Claim to fame..on film!)

Post by Dave ' Linwood ' Lane » Sat May 06, 2017 10:29 am

looks a great event - i do love the look of your Imp BTW :)
Formally known as " Noddy "
User avatar
pubcrawler
Posts: 1086
Joined: Wed Jan 25, 2012 10:26 am
Club Member: Yes
Car Model: 1965 Hillman Imp, 1971 Austin Healey Sprite MkIV
Location: West Midlands

Re: My First Imp (Claim to fame..on film!)

Post by pubcrawler » Sat May 06, 2017 12:54 pm

Dave ' Linwood ' Lane wrote:looks a great event - i do love the look of your Imp BTW :)
Ahh thanks Dave, means a lot to an Imp novice :oops:
Owner of the Green Heartbeat Imp from Aidensfield!
Martin Parkes.
paulchin
Posts: 72
Joined: Tue Aug 30, 2005 9:39 am
Club Member: Yes
Location: Bath

Re: My First Imp (Claim to fame..on film!)

Post by paulchin » Mon May 08, 2017 1:24 pm

pubcrawler wrote:My green thing is at 1 min 48 secs and Richards is in the background at 2 min 52 secs 8)
And if you don't blink, you'll see yours at about 0:57 (behind another car), and the Sozanski's Stiletto at around 1:25 too!

Nice to see these old Top Gear presenters with something good to say about older cars - I was at the Battersea Motorshow last year and Tiff Needell was there - I think he's the patron or something.

This looks like a great event as you've said.
User avatar
617sqn
Posts: 4512
Joined: Fri Dec 05, 2003 11:17 pm
Club Member: Yes
Car Model: Hillman Imp 1972
Location: Sussex, England.

Re: My First Imp (Claim to fame..on film!)

Post by 617sqn » Mon May 08, 2017 1:57 pm

Nice video : but that sound track !? Why..... It's awful :shock:

Andy G
Member No. 7500, and Stan's best mate.
User avatar
pubcrawler
Posts: 1086
Joined: Wed Jan 25, 2012 10:26 am
Club Member: Yes
Car Model: 1965 Hillman Imp, 1971 Austin Healey Sprite MkIV
Location: West Midlands

Re: My First Imp (Grass autotest!)

Post by pubcrawler » Tue May 23, 2017 7:25 am

Had another fun day with my green thing on Sunday :o
Competing with my Nephew on the Owen Motoring Club's annual grass auto test at Catton Park (not far from the National Memorial Arboretum).
Only me in the class but finished 17th o/all out of 24 :D
There were doubts that the event would go ahead after all the rain the previous week but the field drained and dried quickly and I was amazed how much grip the Imp had on the Yokohama tyres 8)
Attachments
Imp 2.jpg
Imp 3.jpg
Owner of the Green Heartbeat Imp from Aidensfield!
Martin Parkes.
User avatar
Lars Hagermark
Posts: 1350
Joined: Mon Apr 03, 2006 9:47 pm
Club Member: Yes
Car Model: 69 Californian (998) and two 1964 Imps (projects)
Location: 25 km s.w. of Stockholm, Sweden (overseas contact).

Re: My First Imp (Grass autotest!)

Post by Lars Hagermark » Tue May 23, 2017 9:58 am

Obviously the Imp had SUV capabilities long before marketing people 'invented' the word. :D
Overseas contact, Sweden. -69 Cali (998), 2 -64 Imps in need of "some" work.
Life is full of solutions waiting to be found.
The Nun
Posts: 7283
Joined: Tue Jan 23, 2007 7:02 pm
Club Member: Yes
Car Model: Imp x 2
Location: South

Re: My First Imp (Grass autotest!)

Post by The Nun » Tue May 23, 2017 1:42 pm

Lars Hagermark wrote:Obviously the Imp had SUV capabilities long before marketing people 'invented' the word. :D
Small Underrated Vehicle? :)
Peter Nunn...ey im member 00033
User avatar
Lars Hagermark
Posts: 1350
Joined: Mon Apr 03, 2006 9:47 pm
Club Member: Yes
Car Model: 69 Californian (998) and two 1964 Imps (projects)
Location: 25 km s.w. of Stockholm, Sweden (overseas contact).

Re: My First Imp (Grass autotest!)

Post by Lars Hagermark » Tue May 23, 2017 3:57 pm

^^^ :lol: :lol: :lol:
Overseas contact, Sweden. -69 Cali (998), 2 -64 Imps in need of "some" work.
Life is full of solutions waiting to be found.
User avatar
ImpManiac
Posts: 9310
Joined: Tue Feb 01, 2005 3:48 pm
Club Member: Yes
Car Model: Singer Chamois
Location: Houghton Regis, Bedfordshire

Re: My First Imp (Grass autotest!)

Post by ImpManiac » Wed May 24, 2017 8:20 pm

That looks like a lot of fun, Martin! :D

IM 8)
Paul Harrison
imp: a small demon : FIEND : a mischievous child : URCHIN
maniac: Raging with disordered intellect: affected with mania: MAD
User avatar
pubcrawler
Posts: 1086
Joined: Wed Jan 25, 2012 10:26 am
Club Member: Yes
Car Model: 1965 Hillman Imp, 1971 Austin Healey Sprite MkIV
Location: West Midlands

Re: My First Imp (Drive it Day 2018!)

Post by pubcrawler » Mon Apr 23, 2018 11:37 am

Haven't updated for a while, too busy with FB...and I said I would never go on it :roll: :lol:
Annual 'Drive it Day' yesterday and I did a total of 185 miles from start to finish :o
106 miles of those were from a road-book route which took us through some scenic countryside around Shropshire and Worcester, car performed well although some of the very steep hills were a challenge with such a cammy engine which requires lots of revving :wink:
We started at RAF Cosford and finished at Shelsley Walsh with my Nephew Luke reading the road-book 8)
I think washing it the day before was a waste of time :lol: :lol:
I've got it booked into a rolling road next month just to see if they can make it a little bit more drivable on the road :D
Next main outing will be the Stratford show on 6th May and this year I'll be doing the small tour beforehand 8)
Attachments
IMG_7145.JPG
IMG_7151.JPG
IMG_7188.JPG
Owner of the Green Heartbeat Imp from Aidensfield!
Martin Parkes.
User avatar
yoeddynz
Posts: 306
Joined: Thu Sep 03, 2009 7:10 am
Club Member: Yes
Car Model: 1965 Hillman Imp with a Datsun A12 powerhouse.

Re: My First Imp (Drive it Day 2018!)

Post by yoeddynz » Tue Apr 24, 2018 8:48 pm

Glad you posted up. Its so much nicer to follow a forum thread with nice photos and a good read than it is to look at unlinked random images on FB. By following good forum threads you can become immersed in a writers project and get taken along for the ride :-)

Always great to see the cars getting used properly after they've been finished too! :D
[https://oldschool.co.nz/index.php?/topic/28896-was-yoeddynzs-1968-viva-mazda-v6-new-owner-welcome-guzzi-rat/
bks974c
Posts: 2570
Joined: Thu Aug 19, 2004 4:26 pm
Club Member: Yes
Car Model: all the above
Location: Edinburgh, Scotland

Re: My First Imp (Drive it Day 2018!)

Post by bks974c » Tue Apr 24, 2018 9:09 pm

I'll second that sentiment. :D :D :D :D :D :D :D :D

Scott
User avatar
pubcrawler
Posts: 1086
Joined: Wed Jan 25, 2012 10:26 am
Club Member: Yes
Car Model: 1965 Hillman Imp, 1971 Austin Healey Sprite MkIV
Location: West Midlands

Re: My First Imp (Drive it Day 2018!)

Post by pubcrawler » Tue Apr 24, 2018 10:44 pm

yoeddynz wrote:Always great to see the cars getting used properly after they've been finished too! :D
Thank you, I will post more news :D :D
Owner of the Green Heartbeat Imp from Aidensfield!
Martin Parkes.
User avatar
pubcrawler
Posts: 1086
Joined: Wed Jan 25, 2012 10:26 am
Club Member: Yes
Car Model: 1965 Hillman Imp, 1971 Austin Healey Sprite MkIV
Location: West Midlands

Re: My First Imp (Front Page!)

Post by pubcrawler » Tue Apr 24, 2018 10:46 pm

Well chuffed, made it onto the front page of this weeks edition :o 8) 8)
Attachments
CCW.jpg
Owner of the Green Heartbeat Imp from Aidensfield!
Martin Parkes.
User avatar
ImpManiac
Posts: 9310
Joined: Tue Feb 01, 2005 3:48 pm
Club Member: Yes
Car Model: Singer Chamois
Location: Houghton Regis, Bedfordshire

Re: My First Imp (Front Page!)

Post by ImpManiac » Sat May 12, 2018 1:50 pm

Well done, Martin! :D The car looks great! And they are definitely for using. :wink:

IM 8)
Paul Harrison
imp: a small demon : FIEND : a mischievous child : URCHIN
maniac: Raging with disordered intellect: affected with mania: MAD
User avatar
pubcrawler
Posts: 1086
Joined: Wed Jan 25, 2012 10:26 am
Club Member: Yes
Car Model: 1965 Hillman Imp, 1971 Austin Healey Sprite MkIV
Location: West Midlands

Re: My First Imp (Rolling Road Visit!)

Post by pubcrawler » Wed May 16, 2018 6:39 am

I love driving my Imp but with the set up I always have to drive with one eye on the rev counter to keep it on cam when climbing small gradients etc :?
So a few people have suggested I get it set up on a rolling road to see if this can be ironed out to make it more drivable, so last week I took it to Aldon Automotive at Brierley Hill :D
He kept if for a couple of days whilst new carb bits were ordered but worth the wait and what a transformation 8)
I can now drive it smoothly up through the rev range with no hesitation around the 3,500 rpm mark :o
Looking forward to doing some sprints with it now 8)
Attachments
IMG_20180514_0001.jpg
IMG_7241.JPG
IMG_7240.JPG
Owner of the Green Heartbeat Imp from Aidensfield!
Martin Parkes.
User avatar
Lotus-e-Clan
Posts: 3605
Joined: Thu Aug 10, 2006 9:08 pm
Club Member: Yes
Car Model: 75Clan 1040BVSSH GB72 mapped ign DHLAs -Waterless!
Location: North Yorkshire

Re: My First Imp (Rolling Road Visit!)

Post by Lotus-e-Clan » Wed May 16, 2018 7:06 am

Great to see the RR print-out - (there is a shortage of technical stuff on here) - something to think about and learn from.

The spec list at the top of the sheet is the starting point I guess?

First IMPression is that the 100 mains seem to be very much at the weaker end - and the 190 Air correctors add to the weaker signal because they are relatively large for the mains. I'm guessing you have 30 chokes - the jetting in the context of 28 chokes would make sense also? 42 max degrees isn't conventional (more than the usual 36 -38 for hot cams) but given the weaker jetting - extra advance may have been dialed-in?

What does the final jetting and timing spec look like?

Car looks purposeful and FAB btw! Clan004
74 Clan Crusader 1040 Red 190 bhp/ton
User avatar
pubcrawler
Posts: 1086
Joined: Wed Jan 25, 2012 10:26 am
Club Member: Yes
Car Model: 1965 Hillman Imp, 1971 Austin Healey Sprite MkIV
Location: West Midlands

Re: My First Imp (Rolling Road Visit!)

Post by pubcrawler » Wed May 16, 2018 7:44 am

Lotus-e-Clan wrote: What does the final jetting and timing spec look like?
Car looks purposeful and FAB btw! Clan004
Thanks, I'm afraid Webers are a bit of a 'black-art' to me :wink:
The main problem was the carbs were running far too rich he said :o
I have 28 chokes and he changed the mains from 120 to 100, not sure about the rest but whatever he did it made a whole lot of difference 8) 8)
Owner of the Green Heartbeat Imp from Aidensfield!
Martin Parkes.
User avatar
Lotus-e-Clan
Posts: 3605
Joined: Thu Aug 10, 2006 9:08 pm
Club Member: Yes
Car Model: 75Clan 1040BVSSH GB72 mapped ign DHLAs -Waterless!
Location: North Yorkshire

Re: My First Imp (Rolling Road Visit!)

Post by Lotus-e-Clan » Wed May 16, 2018 8:38 am

pubcrawler wrote:
Lotus-e-Clan wrote: What does the final jetting and timing spec look like?
Car looks purposeful and FAB btw! Clan004
Thanks, I'm afraid Webers are a bit of a 'black-art' to me :wink:
The main problem was the carbs were running far too rich he said :o
I have 28 chokes and he changed the mains from 120 to 100, not sure about the rest but whatever he did it made a whole lot of difference 8) 8)
Aha! that make sense - the 28 chokes fits the weaker 100 mains jetting better than for 30 chokes - Even for 30 chokes, 120 mains would have been a bit juicy!

You should see better mpg also. Great stuff. :)

Clan004
74 Clan Crusader 1040 Red 190 bhp/ton
User avatar
benwick3
Posts: 1568
Joined: Mon Dec 01, 2003 5:18 pm
Club Member: Yes
Car Model: Race Clan Crusader x 2
Location: Benwick, March

Re: My First Imp (Rolling Road Visit!)

Post by benwick3 » Wed May 16, 2018 7:04 pm

I'm assuming that the attachment is for the final result and from your comments you are obviously more than pleased with it. However, based on the information provided I am of the opinion that the result obtained is not taking full advantage of the characteristics of the Fraser B cam. In this context it would have been interesting to have seen the figures continue to 8500 rpm so as to obtain values nearer the accepted main power rev range for the cam.

Whilst the settings reached are expected to provide safe running I feel there is potentially more power available with no loss in drivability. Based on my experience a change to 30mm chokes and 115 main jets along with F16 emulsion tubes and 180 air correctors will further unlock the performance of the Fraser B cam. Similarly whilst I agree with the 10 degree idle advance, with the above settings I have found a maximum advance of 36 degrees to be adequate.

Anyway in this instance just enjoy the improvements that you have obtained. However, when you get to the stage that you feel that you could do with more power then a change to my suggestions could prove beneficial.

Pete Richards Clan004
Repair. Rebuild. Repeat.
User avatar
Lotus-e-Clan
Posts: 3605
Joined: Thu Aug 10, 2006 9:08 pm
Club Member: Yes
Car Model: 75Clan 1040BVSSH GB72 mapped ign DHLAs -Waterless!
Location: North Yorkshire

Re: My First Imp (Rolling Road Visit!)

Post by Lotus-e-Clan » Wed May 16, 2018 7:40 pm

Yes years ago I adpoted Pete's 115 mains/30 choke settings (applied to DHLA's) using GB72 cam (similar to Frazer B) and there was an instant midrange + top end torque increase.

His setting really do work well. :)

The 28 chokes will restrict the top end power but you probably gain in lower-mid torque. A C/Ratio box helps if you push the power up the rev range too.
Scott has a lot of experience with 28 choke settings IIRC.

Aren't Imp engines great when at full chat! Can't wait to get mine back on the road in june after I return from Whitsun hols. :roll:
Clan004
74 Clan Crusader 1040 Red 190 bhp/ton
bks974c
Posts: 2570
Joined: Thu Aug 19, 2004 4:26 pm
Club Member: Yes
Car Model: all the above
Location: Edinburgh, Scotland

Re: My First Imp (Rolling Road Visit!)

Post by bks974c » Wed May 16, 2018 8:55 pm

Indeed, I wanted the car to drive as smoothly as say a sport engine so no reving to set off on a hill, no power until it comes on the cam etc.

I was happy to sacrifice top end to achieve this drivability which I got by going down to 28mm chokes and correctly set up and balanced webers.

Scott
User avatar
pubcrawler
Posts: 1086
Joined: Wed Jan 25, 2012 10:26 am
Club Member: Yes
Car Model: 1965 Hillman Imp, 1971 Austin Healey Sprite MkIV
Location: West Midlands

Re: My First Imp (Rolling Road Visit!)

Post by pubcrawler » Wed May 16, 2018 9:53 pm

benwick3 wrote: In this context it would have been interesting to have seen the figures continue to 8500 rpm so as to obtain values nearer the accepted main power rev range for the cam.
Pete Richards Clan004
I understand what you're saying, on Saturday I decided to give it a blast on the M54 on the way to a show at Shrewsbury :o
It fled to 70 easily and kept going....at 90 mph I decided to back off as it was starting to wander around and shake a little....and that was just the car :lol: :lol: :lol:
Owner of the Green Heartbeat Imp from Aidensfield!
Martin Parkes.
Post Reply