Exhaust manifolds
Discussion
S
Thanks ste .
clive f said:
because they thought they needed cats inside the manifolds themselves as well as the big cat in the y piece, Don't know how true it is, but once heard a story of tvr attempting to get into the American market and precats were used to try to meet the strict emissions laws in the states, but if its true and it failed anyway, why still supply them on cars in the uk?
decatted or turbo y piece, I Think these will do me fine 😃 thanks please send me a link to your facebook page or pm me Thanks ste .
S
Thanks ste .
clive f said:
because they thought they needed cats inside the manifolds themselves as well as the big cat in the y piece, Don't know how true it is, but once heard a story of tvr attempting to get into the American market and precats were used to try to meet the strict emissions laws in the states, but if its true and it failed anyway, why still supply them on cars in the uk?
decatted or turbo y piece, I Think these will do me fine 😃 thanks please send me a link to your facebook page or pm me Thanks ste .
Those manifolds look stunning Clive. Also a big fan of your Y-piece too. Could you please pm me a price for both.
Also, just thinking outside the box a bit, has anyone removed the pre-cats, run the de-catted y-piece, but installed a sports cat under the car to keep it legal and still reduce under bonnet temps?
I'm assuming the car will still sound awesome even running a sports cat over the original design, or am I mistaken?
It's just the thought of messing around with the exhaust every year to get through the MOT that's stopped me removing all the cats so far.
Thanks
Phil
Also, just thinking outside the box a bit, has anyone removed the pre-cats, run the de-catted y-piece, but installed a sports cat under the car to keep it legal and still reduce under bonnet temps?
I'm assuming the car will still sound awesome even running a sports cat over the original design, or am I mistaken?
It's just the thought of messing around with the exhaust every year to get through the MOT that's stopped me removing all the cats so far.
Thanks
Phil
A friend of mine has the ACT manifolds and didn't want to spend out on the 2 cats for it, so we fitted a Subaru cat which is oval shaped down alongside the sump before the bellhousing, we had to cut back the main pipe and slipped it on and it worked for the mot, but being a fairly small cat I don't know if it would be healthy for the engine to run with it continuously, a cat supplier would be able to advise on what sized of cat would be needed for your bhp output, but it should be possible to do.
clive f said:
because they thought they needed cats inside the manifolds themselves as well as the big cat in the y piece, Don't know how true it is, but once heard a story of tvr attempting to get into the American market and precats were used to try to meet the strict emissions laws in the states, but if its true and it failed anyway, why still supply them on cars in the uk?
Think thats a bit of a red-herring Cliff.Precats were required for the warm up emissions, at the same time they were introducing the lambda sensors. I'd guess the big collector suited the introduction of the 2 items so that the lambda readings are smoothed out (remember the Lucas kit didn't see wild cams in it's rover guise & they were forced to install them in each bank).
clive f said:
A friend of mine has the ACT manifolds and didn't want to spend out on the 2 cats for it, so we fitted a Subaru cat which is oval shaped down alongside the sump before the bellhousing, we had to cut back the main pipe and slipped it on and it worked for the mot, but being a fairly small cat I don't know if it would be healthy for the engine to run with it continuously, a cat supplier would be able to advise on what sized of cat would be needed for your bhp output, but it should be possible to do.
It would make a handy mod for the MOT if you were running a turbo Y-piece.Thanks for the advice. Does anyone know the pipe diameter that I would need to look for to get a good fitting cat?
Will try and do some digging on into the best solution for running cat further down the system and post any finding up for those that are interested.
Once sorted, I'll deffo be placing an order with Clive.....stunning work
Will try and do some digging on into the best solution for running cat further down the system and post any finding up for those that are interested.
Once sorted, I'll deffo be placing an order with Clive.....stunning work
Iv`e always been impressed with V8Frogs manifolds and Y piece .
Absolutely brilliant ,no need for massive pipe diameters . Why has this not been done in the UK ?
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
Absolutely brilliant ,no need for massive pipe diameters . Why has this not been done in the UK ?
http://www.pistonheads.com/gassing/topic.asp?h=0&a...
Edited by SILICONEKID345HP on Thursday 15th January 18:39
gmw9666 said:
Chuffmeister said:
D
Lol glad you like......287bhp.....not bad for an old wedge ;-) gmw9666 said:
and if you want to know what a full fat RV8 with manifolds down the side of the block and no silencers sound like?
enjoy :-) click pic to listen =
Epic!enjoy :-) click pic to listen =
Edited by pwd95 on Friday 16th January 22:00
clive f said:
it can be done quite easily, but do people want the expense of changing the y piece and the manifolds all in one hit? plus extra cat y piece as well?
if they do I`ll make `em.
if they do I`ll make `em.
Would there be an increase in performance seeing as the gases will be flowing faster .
Edited by SILICONEKID345HP on Friday 16th January 22:11
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