GRP 6 link pipes

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moose
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GRP 6 link pipes

Post by moose » Sat Apr 05, 2014 10:09 am

Hi is anyone interested in group 6 stainless steel link pipes to mount an across the back silencer please do not ask how much yet as the more i have made the cheaper so need to gauge interest first the last ones i had made were £50-£60 ish the cost of pipe has gone up since then but as with all things the more pipe i order the cheaper it becomes.

regards mike
Regards Moose
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Turboimp
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Re: GRP 6 link pipes

Post by Turboimp » Sat Apr 05, 2014 10:14 am

i just use a standard stainless 90 degree pipe from demon tweeks about £20 , attach the far end of the silencer to a bracket hanging from the water pump . The whole assembly is then part of the engine with no stress or noise transmitted through the body . i never did understand why people mount the transverse silencer to the body ! Imp009 Clan005
1967 Imp Sport turbo 328000 Imp Miles , in the same car
1972 Clan Crusader 232000 clan Miles in the same car
must be some kind of record !
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Re: GRP 6 link pipes

Post by Impecunious » Sat Apr 05, 2014 12:56 pm

moose wrote:Hi is anyone interested in grp 6 stainless steel link pipes to mount an across the back silencer please do not ask how much yet as the more i have made the cheaper so need to gauge interest first the last ones i had made were £50-£60 ish the cost of pipe has gone up since then but as with all things the more pipe i order the cheaper it becomes.

regards mike
I just had this picture of a fibreglass exhaust pipe drift through my mind.... :lol: :lol: :lol:

Dave W.
allthingscars
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Re: GRP 6 link pipes

Post by allthingscars » Sat Apr 05, 2014 1:19 pm

Hi yes please put my name down for one.
What we need is a stainless combined manifold to go with it but how much would that cost,just come back from gran canaria stainless must be cheap there all the railings and even the lamp posts are made of it
Kev
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Re: GRP 6 link pipes

Post by Turboimp » Sat Apr 05, 2014 5:20 pm

It is time one of the fabricators of Imp competition/combined manifolds spent their time more usefuly producing their art in stainless steel , price isnt a problem , there is no way £850 can be justified for a mild steel one which for me rots in 4 years .... but people do pay those kinds of price .
I have heard excuses that stainless will crack , well that's not the case with my combined manifold which i repaired with some stainless tube and still going strong years/miles later . Also my turbo manifold has stainless primary tubes and thats taken some stick with heat and salt over the years . Other makes and models use stainless manifolds especialy on turbo engines ...
so why is no one making Imp combined manifolds out of stainless , is it planned obsolensence like a lot of cars today ? I suppose they would be out of business within a coupule of years if they did start making them ... Imp009 Clan005
Last edited by Turboimp on Sat Apr 05, 2014 6:44 pm, edited 1 time in total.
1967 Imp Sport turbo 328000 Imp Miles , in the same car
1972 Clan Crusader 232000 clan Miles in the same car
must be some kind of record !
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Re: GRP 6 link pipes

Post by pubcrawler » Sat Apr 05, 2014 6:07 pm

Turboimp wrote:i just use a standard stainless 90 degree pipe from demon tweeks about £20 , attach the far end of the silencer to a bracket hanging from the water pump . The whole assembly is then part of the engine with no stress or noise transmitted through the body . i never did understand why people mount the transverse silencer to the body ! Imp009 Clan005
If you get chance could you post a photo please :D
Didn't want to attach my silencer to the body because of the stress and your solution sounds ideal 8)
Thanks in anticipation :)
Owner of the Green Heartbeat Imp from Aidensfield!
Martin Parkes.
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Turboimp
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Re: GRP 6 link pipes

Post by Turboimp » Sat Apr 05, 2014 6:57 pm

Here is my Clan version which has been on there some years now , I have since removed the silencer in the "normal" position as the motor cycle silencer on there is very efficient at silencing . I used 2 L brackets made from 3mm x 19 mm steel strip , one mounted to the forward end of the lower water pump casing bolt with the lower L part facing back and the other at the rear end of the same bolt with both legs of the L over- lapping and a bolt going through an old poly v belt to secure the end of the silencer ...
Attachments
transverse silencer.jpg
Transverse silencer not mounted to the body ...
transverse silencer.jpg (104.15 KiB) Viewed 7760 times
1967 Imp Sport turbo 328000 Imp Miles , in the same car
1972 Clan Crusader 232000 clan Miles in the same car
must be some kind of record !
moose
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Re: GRP 6 link pipes

Post by moose » Sun Apr 06, 2014 7:16 am

so far that is 1 then?


you can mount to body no problem so long as you rubber mount it, mine has been rallied like that for 15 years never had an issue, I will look into making a fibreglass one for Dave and other clan owners :lol:

the idea of using the complicated link pipe (compared to a 90 deg bend) as per the group six cars is the tuned length from manifold to silencer is maximised to increase torque something you want to get the most of on a small cc engine when used in competition work.

i have enquired about manifolds in both SS and mild the more you order the cheaper they would be but i am not prepared to invest thousands of my own money to have a batch made to spend the next 20-30 years to get my money back this is the problem with the imp tuning parts do not sell in the quantities of mini or escort parts so the parts are either expensive one off's or unavailable.

Image
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Re: GRP 6 link pipes

Post by apeximp » Sun Apr 06, 2014 6:04 pm

As you know mike I NEED one 100%

Jim
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Re: GRP 6 link pipes

Post by moose » Sun Apr 06, 2014 8:07 pm

i am on it Jim need a spare for myself so we are at three so far will put a post on facebook to see if i can stir up some interest

regards mike
Regards Moose
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Re: GRP 6 link pipes

Post by Colin Valentine » Mon Apr 07, 2014 3:52 pm

Moose,
Add me to your list for a S/S Link Pipe.
It looks good.
Thanks,
Colin Valentine - Comp Secy & Fantasy Historic Rally man ! We can all dream
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brakedisc
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Re: GRP 6 link pipes

Post by brakedisc » Mon Apr 07, 2014 7:38 pm

I try and make as much as possible for my cars to keep costs down. This has made me a reasonable fabricator but having recently had a go at making a combined manifold I can understand why they are the price they are. The only way to do them cheaply is to spend vast sums on industrial tooling for the stubs and bends and then build a proper millimetre perfect jig for fabricating them. I doubt there is enough needed by the Imp community to warrant this. Perhaps if they were to be made where labour is cheap there might be a chance of this happening.

My next effort will be a cast inlet manifold and a stainless exhaust.
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Re: GRP 6 link pipes

Post by leadfoot » Mon Apr 07, 2014 7:55 pm

Hi Mike
add one for me please.

cheers Keith.
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Re: GRP 6 link pipes

Post by apeximp » Mon Apr 07, 2014 9:05 pm

Must be nearly there mike :D

Jim
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