SS1 1600 exhuast manifold

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SS1 1600 exhuast manifold

Post by nickkeyser » Thu Nov 24, 2011 1:41 pm

scimjim wrote:you could be right - I've just bought an escort 4-2-1 to modify.
Jim, the 4-2-1 over chassis tubular manifold on the race car can probably be borrowed to be copied. Its really quite old and has already had a good session with a tig welder chasing cracks - so probably due replacement.


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Re: SS1 1600 exhuast manifold & reverse light switch

Post by scimjim » Thu Nov 24, 2011 1:51 pm

a couple of pics would help Nick - the car's pretty bare ATM, so once I finalise the engine position it should be a fairly simple hack and tack job :-)

keeping an eye out for a silencer that will get inside noise regs and side exit but I may have to splash out on a repackable one?


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Re: SS1 1600 exhuast manifold & reverse light switch

Post by CNHSS1 » Thu Nov 24, 2011 1:56 pm

scimjim wrote:but I may have to splash out on a repackable one?

look for bike silencers. Most are repackable, cheap and light (v.light if you can find a titanium acropovic or similar). Often cheap on ebay where theyve been dented or scratched when the riders run out of talent and dropped it. Obviously cosmetics when buried under the car dont matter, whereas the bike boys have them on show so tend to change dinked ones. Plenty of 2" and up to 2.5" on modern bikes (one on Batmobile was a 2.5" Micron repackable)


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Re: SS1 1600 exhuast manifold & reverse light switch

Post by philhoward » Thu Nov 24, 2011 1:58 pm

Shallow, wide and not too long? Can measure the one on my Jeep if you want. Its the only silencer (apart from the Cat) and they're abour £30 delieverd with plenty of spare pipe left on it for the exit strategy...flows enough for 174bhp of Yank 4 litre..


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Re: SS1 1600 exhuast manifold & reverse light switch

Post by scimjim » Thu Nov 24, 2011 2:09 pm

just looking at an akrapovic on locostbuilders (http://www.locostbuilders.co.uk/forum/3 ... tid=163268) Craig - looks like the ends are riveted on though?


Jim King

SECURE DRY STORAGE FOR YOUR SCIMITAR

Current: SE5 (8Ball), TI SS1 (snotty), 1600 SS1 (G97), 1600 SS1 (C686CCR), 2.5TD SE5a (diesel 5a), 6 x random other SS1s.
Previous: SE5, 3 x SE5a, 2 x SE6a, 3 x SE6b, GTC, 2.9i GTC, 3 x 1600 SS1, 1300 SS1, Mk1 Ti Sabre, Mk1.5 CVH Sabre
Chief mechanic for: 1400 K series SS1 (Megan3), 1400 CVH EFi SS1 (Grawpy), 1300 SS1 (Number One) & Sarah's coupe.
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Re: SS1 1600 exhuast manifold & reverse light switch

Post by scimjim » Thu Nov 24, 2011 2:10 pm

could be an idea Phil - not too fussed about size as I can cut the passener floor out and reglass.


Jim King

SECURE DRY STORAGE FOR YOUR SCIMITAR

Current: SE5 (8Ball), TI SS1 (snotty), 1600 SS1 (G97), 1600 SS1 (C686CCR), 2.5TD SE5a (diesel 5a), 6 x random other SS1s.
Previous: SE5, 3 x SE5a, 2 x SE6a, 3 x SE6b, GTC, 2.9i GTC, 3 x 1600 SS1, 1300 SS1, Mk1 Ti Sabre, Mk1.5 CVH Sabre
Chief mechanic for: 1400 K series SS1 (Megan3), 1400 CVH EFi SS1 (Grawpy), 1300 SS1 (Number One) & Sarah's coupe.
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Re: SS1 1600 exhuast manifold & reverse light switch

Post by reliant-reviver » Thu Nov 24, 2011 2:12 pm

I'd definitely by interested in a 4-2-1 tubular CVH manifold, there surely has to be a market for a small batch of 5-10?


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Re: SS1 1600 exhuast manifold & reverse light switch

Post by CNHSS1 » Thu Nov 24, 2011 2:31 pm

scimjim wrote: Craig - looks like the ends are riveted on though?
drill them out and replace with stumpy screws or for as often as you will need to repack, just drill out and re-rivet.

im not up on bikes, but one of my mates told me its to stop the bikers chucking out the packing and making them illegal as easily, but doesnt seem to stop them (well, him anyway!)


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Re: SS1 1600 exhuast manifold & reverse light switch

Post by victorgte » Thu Nov 24, 2011 4:19 pm

reliant-reviver wrote:I'd definitely by interested in a 4-2-1 tubular CVH manifold, there surely has to be a market for a small batch of 5-10?
I said the same on a thread some months ago. Still interested.


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Re: SS1 1600 exhuast manifold & reverse light switch

Post by reliant-reviver » Thu Nov 24, 2011 4:21 pm

Still interested at £200-£300 a peice? I'd guestimate that's what they roughly cost in tubular stainless...


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Re: SS1 1600 exhuast manifold & reverse light switch

Post by victorgte » Thu Nov 24, 2011 4:37 pm

If there is a noteable difference in performance then yes. I don't want to spend hundreds of pounds for an extra 5 to 10bhp. If I get at least 20 bhp more I will uprate my brakes too. Any educated guess on what the bhp might be (inc K & N filter sat in my shed)? I have an excellent tuner with race pedigree near to me who can set it up one all mods done. He got the current standard cvh running a treat last year.


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Re: SS1 1600 exhuast manifold & reverse light switch

Post by reliant-reviver » Thu Nov 24, 2011 4:56 pm

Well IMHO the exhaust is the biggest restiction on the CVH SS1. The quality of systems from the downpipe back vary in restrictivness. But my main gripe is with the standard downpipe, which is a truely shock bit of kit!

Take Nick K's sprint car for example, the engine spec shoudl have seen an easy 110-130bhp. however, it was still fitted with an entirly standard exhaust, and no more than 106bhp could be achieved. Whilst he hasn't had it back on the rolling road yet, he claims there was a massive differnce with the new 4 branch manifold and free flow exhaust fitted.

I've no leads on friendly exhaust manufacturers, but it's been something on the to do list for a long while. So perhaps it's time to get teh ball rolling on tubular manifolds for the CVH cars...


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Re: SS1 1600 exhuast manifold & reverse light switch

Post by Roger Pennington » Thu Nov 24, 2011 5:07 pm

Just a thought - an "over the chassis" type manifold as Nick's described, is presumably going to require additonal work to fit, i.e. inner wing mods, and presumably you'd really need to be thinking in terms of a custom exhaust or part of the exaust, (since it's not going to mate with the existing downpipe). Now I realise that doesn't matter to the compie or semi-compie (and you could argue they are the people who are most likely to spend the money), but it's just a question of understanding your potential market, and ensuring that people know what they're letting themselves in for. :)


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Re: SS1 1600 exhuast manifold & reverse light switch

Post by reliant-reviver » Thu Nov 24, 2011 5:14 pm

Indeed, the other thing I've considered, was perhaps a stainless downpipe that would mate up to the better designed XR3i cast iron tubular style manifold, which indcidentally seems to last a lot better and is not as susceptible to cracks.
Last edited by reliant-reviver on Thu Nov 24, 2011 5:25 pm, edited 1 time in total.


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Re: SS1 1600 exhuast manifold & reverse light switch

Post by Roger Pennington » Thu Nov 24, 2011 5:19 pm

Yes, that might be a good "halfway house" solution which would give an option to the person running a cvh SS1 on a budget, and leave the way clear for a "no compromise" compie version. :)


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