stainless steel manifold - is it worth the money?????

[jimmy2scoop]

i've been wanting to upgrade my manifold for a while, to get more torque and better engine note, heard many different things and spoken to many different people - one well respected chap in the lotus world (no names)i just spoke to said it would "not do anything" maybe 1Bhp, and that it wasn't worth the money.

I want to hear from people who have had an upgrade and what the think........ is it money well spent, or am i just pis*ing up the wall??

nice one guys
2scoop

[S works]

OK so you have a 111S and are considering just a s/s replacement of the existing pipe, or a 4-2-1 manifold?

IIRC the VVC engine doesn't respond well to this, but the 135 see's excellent gains. Could be wrong of course, will need to search to be sure...

[jimmy2scoop]

It's the 4-2-1 i'm looking to change, got a bell and colvill s/s cat back, 160 throttle body, and the 'rice burner' moto-build induction system!

what do people think?
2scoop

[scuffham]

exaust manaifold is one of the single biggest changes you can make to the engine (without cracking it open).

a good 4-2-1 will be a BIG improvment over the std 111S item, not just in BHP terms, but in mid-range torque.

what it's made from is not relevent to performance only logevity and reliability.

[bher]

scuffham said:

what it's made from is not relevent to performance only logevity and reliability.

Could you please explain more? Is it "dangerous" to change the exhaust manifold in term of reliability? I am also tempted by this...

[S Works]

If you've already got a 4-2-1 and you're changing from mild steel to s/s then I guess it's doubtful if there will there be any improvement (assuming it's not cracked, blowing etc.) at all.

[sp60]

bher said:

scuffham said:

what it's made from is not relevent to performance only logevity and reliability.

Could you please explain more? Is it "dangerous" to change the exhaust manifold in term of reliability? I am also tempted by this...

I presume he means longevity and reliability of the exhaust. ie it won't rust and fall to bits in a few months.

[Turnamere]

have a look at DVAPOWER Kseries engine page, loads of info on tuning options.

[scuffham]

sp60 said:

bher said:

scuffham said:

what it's made from is not relevent to performance only logevity and reliability.

Could you please explain more? Is it "dangerous" to change the exhaust manifold in term of reliability? I am also tempted by this...

I presume he means longevity and reliability of the exhaust. ie it won't rust and fall to bits in a few months.

exactly, "dangerous" is not a way I would describe an exhaust manifold.

please note however, there are manifolds and manifolds, Janspeed and the like make some, they are better than stock, but not the best. Look for the people that have done them for years on the specific application you are looking at (ie. 111S), eg. Eliseparts. Also note that there are other parts that will need reviewing at the same time to get the most from them.

Material wise, worth holding out for ones made out of 304 stainless, they might cost a little more, but will last longer than you will, also, look for ones are are TIG welded together preffereably back-purge welded (gives a much better consistent weld on both sides of the tube).

[cej]

I'm saving up for this baby,pretty sure it's worth it:

www.eliseparts.com/shop/index.php?main_page=product_info&products_id=392