Sunbeam Stiletto with a Kawasaki Engine.

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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by gnatman » Sun Feb 15, 2015 8:46 am

top tip for smokey engines - take the rotor arm out so it wont run and therefore wont smoke...

what next ? take your brakes off if they dont work?
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by The Nun » Sun Feb 15, 2015 9:28 am

Yeah, or just fit a chassis plate off a 1960 car and it doesnt need one at all. :roll:

The car can then be absolutely appalling with nothing working and its just fine.

Sorry, I feel a little out of context drifting coming, better shut up.
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by gnatman » Sun Feb 15, 2015 9:57 am

I don't know why I bother

I hope your car passes its MOT
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Dogsbody » Sun Feb 15, 2015 10:04 pm

I sold the car in 89 Lewis and found it in a barn in Wales about 5 years ago.
Engine does run, but there is so much rust in the tank, its blocking fuel filters and pick up.
If I drive it the 5 miles to the MOT centre I will need to strip it all down to drive it home again.

You lot obviously don't know the right MOT people. :wink:

As this is a full rebuild with major modifications I'm expecting to have a few jobs to do !
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by lewisparrot » Mon Feb 16, 2015 9:13 am

Good luck today Graham with mot when you do your track day try and do a video Ive never been on a track day sounds good. Lewis
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Dogsbody » Mon Feb 16, 2015 2:02 pm

MOT passed :D

just need a new petrol tank from Malcolm Anderson and my new alternator to be delivered.

Also it snagged the trailer where its so low, so I need to check the under side.
It sat on the trailer ramps smoking the back tyres :shock:
Just a bit light on the rear !
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by ImpManiac » Mon Feb 16, 2015 2:15 pm

That's great news, Graham! :mrgreen: Not long now until that maiden voyage road trip... :wink:

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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Lars Hagermark » Mon Feb 16, 2015 2:29 pm

Good news! :D
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Dogsbody » Tue Feb 17, 2015 10:00 pm

Alternator arrived today and Malcolm has posted the tank to be delivered tomorrow.
Jobs for Saturday as I promised I would do some wiring in the water mill on Friday.

I have a GoPro mount in the car, so will put me Hero Camera in there for a drive out next week.
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by 67cali » Tue Feb 17, 2015 10:05 pm

Great to see this progress. Looking forward to seeing it.
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Dogsbody » Sun Mar 29, 2015 9:26 pm

Its all together and I have done about 6 miles in it.
Temp came up to 92 and I have been into 6th gear.
Gear change is really sweet being sequential. :D

But the carbs are still terrible :( Another set have arrived and seem OK. Going to fit on Tuesday :D
Then its out on the open road.

New chain tensioner works a treat and I'm really happy with it.
Speedo doesn't work so I have been using my "Roadangel" :wink:

It WILL be at Castle Combe for the Spring Action day at the end of the month, after missing out on a trackday 3 weeks ago.
Took the Puma and had some fun in the morning seeing off a Elise , VX220 . M3 , Mini Cooper and a few other much faster cars.
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by ImpManiac » Mon Mar 30, 2015 12:41 pm

Great news on the Stiletto, Graham! 8) 8) What's it like on the road? I mean, aside from going like the proverbial off a shiny shovel... :wink:

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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Dogsbody » Mon Mar 30, 2015 7:02 pm

ImpManiac wrote:Great news on the Stiletto, Graham! 8) 8) What's it like on the road? I mean, aside from going like the proverbial off a shiny shovel... :wink:

IM 8)
Not really done much on the road as the carbs have been upsetting me.
Where they are out of balance it chugs a bit till its screaming !

I connected up the throttle cable to the new ones today and fitted the on the rubbers.
I think tomorrow I will leave the water mill wiring and finish fitting the carbs.
Deserves to get driven out and get a proper run.

Got a show the end of April I want to take it to.
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Dogsbody » Mon Mar 30, 2015 7:59 pm

One thing I have ordered from Ebay is a set of Air Horns :shock:
Thought when I let loose the Kawasaki engine to the "unsuspecting" it should be accompanied by "Dixie" :lol:

Thanks to its age I can legally fit musical air horns..
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by ImpManiac » Wed Apr 01, 2015 2:45 pm

Dogsbody wrote:One thing I have ordered from Ebay is a set of Air Horns :shock:
Thought when I let loose the Kawasaki engine to the "unsuspecting" it should be accompanied by "Dixie" :lol:

Thanks to its age I can legally fit musical air horns..
A Ninja with air horns...? :shock: Frightening! :lol: :lol:

Keep at it, Graham. :wink:

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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Dogsbody » Fri Apr 03, 2015 6:22 pm

Just had the friend I bought my car off in 1988 drop in for a coffee. Not seen him for 20 years :o
He was saying he paid £50 for it in 1987 and did quite a bit of welding.
Also wasn't a full Stiletto engine in he thought..

I paid £100 for it a year later from him and sold it a year after that for £600 !
in 2010 I paid £200 I think it was :?

So I'm at least £300 in profit !
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by ImpManiac » Fri Apr 03, 2015 10:38 pm

That's great! :? :wink:

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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Lars Hagermark » Fri Apr 03, 2015 10:40 pm

:) :) :)
Very well worth solving the small gremlins then. :lol:
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Dogsbody » Wed Apr 15, 2015 10:17 pm

Been out for a drive on the road.
It got VERY hot, 105 DegC, luckily its full of Evans waterless coolant so does not boil of pressurise.

I have now fitted ducting to the radiator and got a rev counter working, so I can see how hard its screaming. :lol:

Dixie air horns are also mounted in the boot area which is pretty empty. Used to house a engine...

Friday is drive out day.
I have a show a week on Saturday with it :o at Castle Combe.
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Lotus-e-Clan » Wed Apr 15, 2015 11:03 pm

Today (and tomorrow) I've been in the process of converting to Evans Powercool 180 so I'm interested in your cooling woes.

In particular I'm interested in which water pump you are using?

I reckon that you need a greater coolant flow with Evan's compared to water-based coolant, mainly because of the lower specific heat of Evans compared to water.

This is roughly way I understand it (to best of my ability -not an expert) ...
Water (specific heat = 1) holds more heat but it gives it up slowly - it can almost be considered an 'insulator' in fact!, that's why it's warmer by the sea in winter. So you want a relatively slow coolant flow to allow it to pick up as much heat as possible and a slow flow through the rad too because it gives-up its heat more slowly.

Evans (specific heat is about 60% of water) takes on less heat at the engine so you need a greater flow to cool it - but will give it's heat off more quickly at the rad (and in the engine bay hoses etc) so the fast flow here is not a disadvantage.

As a reference, compare to aluminium who's specific heat is about 20% of water - it takes on and gives up heat quickly - but copper is even faster with a specific heat of 9% of water.

I have read elsewhere on the net that others who have converted to Evans have uprated their water pumps - but the explanation they gave was because Evans is more viscous than a water coolant - it might well be, but I think they miss significance of the specific heat issue.

So as well as ducting your rad you might want to consider running your electric water pump at a high rate...

Hope to know myself by the end of the week how it compares to water in my own system (air-flowed rear rad). Clan004
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Dogsbody » Thu Apr 16, 2015 6:33 am

I do have an axillary electric water pump in the circuit. :wink:
As the "bike" pump only used to have a very small distance to pump the water, I thought it a good idea. Think its a Bosch one as used by Audi etc, came from Ebay.
My other reason for fitting it is, I can leave the cooling system running without the engine :o
I can leave the coolant circulating and the fans on with the engine off.
Good idea I thought if it gets really hot at a trackday.

So I can experiment with just bike water pump running or backed up with the electric one.

I have a funeral today and a good work mate :cry: so will be saying good bye with a few stiff drinks after.
But tomorrow I intend taking out on the road again to see how it goes.
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Lotus-e-Clan » Thu Apr 16, 2015 6:59 am

I use a VAG aux water pump (13L/min) to supplement the heater /oil heat exchanger circuit as well as a Davies Craig EWP 80 l/min main pump.

Given my own (limited) experience with the VAG aux pump, I guess you might just find the aux pump (if it is 13L/min) a little lacking, even when running it simultaneously with the std bike pump. It's possible that the main revs/belt driven mechanical pump will be running inefficiently at low revs and not getting rid of residual heat after a high rev full-throttle blast - especially given the specific heat characteristic of the Evans and it needing greater flow.

Food for thought anyway - and see what happens after you air/flow/cowl the front rad. Clan004

Best wishes for today.
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by moose » Fri Apr 17, 2015 12:15 pm

not wanting to insult you but asking the daft questions can sometimes reveal and oversight by the person heavily involved in the work but are both pumps running in same direction? do you have suitable airtight ducting in and out of the rad, have you gone up in rad size due to the extra weight the engine is now moving? only run and electric pump after an engine has shut down if you have a temp controller that stops the pump before t/stat shuts or remove stat. 13 l and hour seems very low flow rate to me davies graig website has some good info on it that may help.
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Dogsbody » Tue Apr 21, 2015 3:34 pm

All sorted :) I have added more ducting to seal the area around the radiator , so all air has to go through it.
Maximum it went to was 91 DegC , on the open road it was around 80.

Just need to seal off the engine as I need both windows open, its so hot ! :lol:

Evan's contacted me too, the waterless coolant runs around 10 DegC hotter than water and the Kawasaki control doesn't bring the fan in till 105 DegC.
So all the figures are acceptable.
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Lotus-e-Clan » Tue Apr 21, 2015 3:38 pm

Dogsbody wrote:All sorted :) I have added more ducting to seal the area around the radiator , so all air has to go through it.
Maximum it went to was 91 DegC , on the open road it was around 80.

Just need to seal off the engine as I need both windows open, its so hot ! :lol:

Evan's contacted me too, the waterless coolant runs around 10 DegC hotter than water and the Kawasaki control doesn't bring the fan in till 105 DegC.
So all the figures are acceptable.
Just got back from the second test with Evans in the Clan ...interesting result with the Laminova ...more to follow ... need to get to Post Office before they close .. Clan004
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Lotus-e-Clan » Tue Apr 21, 2015 5:30 pm

8 litres of Evans Powercool 180 went in (normal for IMP is about 6 and a bit litres). New rear Alum rad is much deeper so holds more coolant plus I have two 10 row Mocals in the nose.

First run in cold 8C ambient air on Sunday showed more responsive engine cooling control than before... ie whatever temp I set on the EWP controller it responded immediately and kept it closer to target.

On Sunday I had an AIR lock in the heater circuit which contains the LAMINOVA oil/coolant heat exchanger, so I thought, *THAT* must be why the oil temp out of the Laminova was much higher than normal (95C) within a very short distance (4 miles). :shock:

But on second thoughts :? , if the coolant isn't moving (air lock), then why should the oil temp *LEAVING* the Laminova be 95C when the engine temp is 75C and the sump temp (after it's been through the engine) about 70C, all within a very short distance? :?

The second test today showed the heater circuit air lock wasn't that significant. Ambient Air was 24C (so it's a worthwhile test) and the heater air lock is completely eliminated. The engine temp responded to set controller temp much as it did on Sunday which is FAB considering the significant ambient air difference of 16C. The oil temp leaving the Laminova was high again (92C!) and this time the sump temp came up to 82C with an engine water jacket temp of just 75C! :o

This is NOT what happens with water coolant. It proves (for me at least) that the EVANS IS indeed giving-up the heat MUCH more efficiently than WATER-based coolants and passing the head heat straight into the OIL leaving the rear rad less heat to dissipate by the time the Evans reaches it some distance from the Laminova!
:|

Previously on WATER coolant at start-up, the Laminova would share *some* of the water heat from the head with the oil such that the oil temp LEAVING the Laminova would take it's time to get to 60C and finally equilibrate at system temp (previously 82C).

The difference in the Laminova behaviours between water and EVANS proves to me that WATER might indeed hold MORE heat, but it's more reluctant to give it up at the Laminova, and therefore it follows, ...water is also reluctant to give-up heat at the RAD - a good advert for POWERCOOL IMHO! :o

Which makes me very happy for the new rear alum rad but it means I need to rethink the plumbing of the Laminova so the EVANS doesn't put so much cylinder head heat directly into the oil.

Maybe I'll plumb it into the into the bottom hose or the colder return from the heater/Mocal circuit ? Clan004
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Dogsbody » Thu Apr 23, 2015 5:50 am

Cleaned ready for its first show on Saturday.
Spoke to a man about Lexan rear side windows with clear air scoops in yesterday.
Sending him the template today so they can be made up.

Image
Image
Image
Image
Image
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by lewisparrot » Thu Apr 23, 2015 6:32 am

Just buy a small sheet of polycarbonate and cut your own with a jig saw. very easy job to do. by the way car looks good.
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Dogsbody » Thu Apr 23, 2015 7:49 pm

lewisparrot wrote:Just buy a small sheet of polycarbonate and cut your own with a jig saw. very easy job to do. by the way car looks good.
Regards Lewis
:)

Thanks Lewis.
I have sent the template away for a lexan window with a air scoop now.
Going to get a mate to fit it :wink:
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Dogsbody » Fri Apr 24, 2015 9:30 pm

Had my ear defenders on today bringing the Stiletto home ready for a show tomorrow at the Castle Combe circuit.
Wow is it quick. :D
Had it travelling sideways up the road when I pulled away with a bit of "exuberance" from where is being stored.
Smokin tyres :shock:
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Dogsbody » Sun Apr 26, 2015 12:34 pm

Image

First show done yesterday.
Lots and lots of interest in the car, there was always people looking at it.

The drive to and from has thrown up a few "issues"
1/ It needs a bigger radiator. I'm going to order a Fiat one from Ebay in a minute., which I'm told is the one to use.
2/ I need a partition between me and the engine...It gets hotter than hell in there :o I have ordered Lexan rear side windows with air scoops.
3/ I need to experiment with the adjustable suspension and tyre pressures. As its so light on the back end, when I was down shifting on the wet roads going to Combe. The back tyres were locking slightly and the car was squirming. It also spins the back wheels up quite easily.
4/ It very very very Fast ! Had a Sporty Lexus sat right on my bumper on the way home. We came off a roundabout and there was nothing in front on the A350 and I floored it in 3rd gear. Screaming it round to about 10k till I was in 6th. No sign of Lexus :lol:
5/ lastly a need a wiper arm..It rained and only the drivers side grips the splines. Phone call to Malcolm on Monday :wink:
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by bazzateer » Sun Apr 26, 2015 5:20 pm

If the scoops are intended to draw cooling air into the 'engine bay' make sure it's got somewhere to go!
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by lewisparrot » Sun Apr 26, 2015 6:12 pm

Hi Graham what radiator are you using at the moment
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Dogsbody » Sun Apr 26, 2015 11:15 pm

The original gpz900r one. I believe cooling was marginal anyway. Now the engine is working harder and has no air flowing over the engine it's not good enough.
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by lewisparrot » Mon Apr 27, 2015 5:32 pm

Hi Graham on mine which has the zzr radiator as you know, I have completely cut away the front of the car where the radiator is, so looking to the front of the car you can clearly see the whole radiator. I don't have any over heating problems at all. Lewis
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Lotus-e-Clan » Mon Apr 27, 2015 6:31 pm

lewisparrot wrote:Hi Graham on mine which has the zzr radiator as you know, I have completely cut away the front of the car where the radiator is, so looking to the front of the car you can clearly see the whole radiator. I don't have any over heating problems at all. Lewis
But before you do cut the front away, and maybe to preserve your currently very appealing front aesthetics, it might be worth trying another fan position/cowling design and also increase (or move) the exit in the bonnet, because the devil is in the detail

I found the best for natural air flow is with the fan held well off the matrix about 2 1/2 inches in a sealed housing so it doesn't it self impede ram air and can suck air through ALL of the matrix when running. Something like this like this.
fanhousing.jpg
Fans attached/too close impede natural ram airflow and do not ventilate the whole rad area when sucking.
1013852_10152030907251378_1540387236_n_zpsshqt1wds.jpg.jpeg
Also the small incoming opening shouldn't be an issue IF it then opens into a big sealed space just in front of the rad. Porche 911 have 2 small rads in the nose with small openings that open into a bigger plenum in front of the rad. This set-up forces the air to suddenly expand into the plenum ...and gas laws dictate that expanding air cools (compressed gas heats).

So as long as you have a sealed space in front of your rad after the opening then I'd be working on the EXIT air. Those bonnet inserts look like thy might impede and if you have kept the fan position as above then it could be maybe improved. The Porsche rads ventilate into the inner wheel arch which is at low pressure ..but if you do that then I'd vent into both sides so the brake temp stay same both sides. You'd end up with a big vent area (vent should be a bit bigger than the inlet) from modest holes in each inner arches.

Also don't underestimate the need for increased water flow with Powercool 180 ... plus the usual air locks, hose heights relative to header tank height etc.

A bigger rad means more Powercool = more weight and you'd still need to increase the exit air vent efficiency to suit the bigger rad. So I'd increase vent-age first - if it doesn't work, then try a bigger rad as last resort.

Your Stiletto looks FAB btw Clan004 .
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Dogsbody » Wed Apr 29, 2015 6:37 pm

Offered up new radiator today, will fit fine .
I have cut the rest of the area behind the grill away but left the grill fixings so it or a variation of it can be refitted.

Going to put the battery back in the boot I have decided, bit of weight may help ;) and it gives me more room under the front for air ducts etc,
Bottom of spare well well will be going.

Jobs for next week :)

Need it running asap as I need to drive over to Trowbridge to get a mate to change the rear side windows for the lexan ones with vents. :wink:
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by lewisparrot » Sat May 02, 2015 12:05 pm

Hi Graham I have decided to sell my imp, if you know anyone who might be interested please let them know thanks Lewis https://www.dropbox.com/s/39el2wyqrj58r ... 5.MP4?dl=0
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by Dogsbody » Mon May 04, 2015 8:54 pm

Will do Lewis, what sort of price?

I'm fitting the new radiator tomorrow in mine.
Will never sell my Stiletto again. :wink:
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Re: Sunbeam Stiletto with a Kawasaki Engine.

Post by lewisparrot » Mon May 04, 2015 9:46 pm

Hi Graham I hope the rad works ok it should do. If I had plenty of cash I wouldn't need to sell but I get a lot of enjoyment taking on new projects so Ive put my imp on ebay starting at £8000 this is the amount of cash I need to buy a shell, electric motor, and batteries. batteries will cost at least £5000 for lipos. the motor will produce 140 hp nice and quiet, cool, no radiator needed. If I was to total up the amount of cash I have spent on my car and charge £15 per hour for my time I would need £20,000 to break even but its a labour of love. If it doesn't sell are you going o the nationals this year Croft will be a good circuit for you and I might take my car and try and keep up with you.
Good luck
Lewis
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