Tbf wardy started the new thread I just helpedOriginally Posted by Clive "is a 14 year old" Littlechild
Tbf wardy started the new thread I just helped
1998 Nissan 200sx s14a , 2000 std 5 speed with nismo supercoppermix clutch bn6 Sapphire Blue
Aey men to that I own a tomei one, its the only manifold I've seen that has power graphs to support it. What cracks me up is the cheap replicas that claim the same power figures
Mine lasted 3 months before the first weld cracked. Another member on here I know had one that lasted 2 x 15 minute sessions.
tomei stuff is awesome but im not a fan of the manifolds. I think your paying more for the name rather than the product.
Any pics of this?
Afraid not. This was 5-6 years ago. 100% tomei though.
No pics, then I don't believe you
Mines been on a year done several drift days etc and car was sat on its arse. Flexi down pipe is the key
Got it in onea flexi takes the stress off a manifold from cracking
Tomei manifolds are often slated for cracking but no one ever puts how ! other than its "over priced cr@p ! "
I never said it was overpriced crap. I said I know of at least 2 that have cracked. When your paying 5 times more for a branded item like tomei you dont expect it to crack after 3 months. Mine was fitted without a flexi downpipe but as far as im concerned tomei doesnt state you need one and they dont make a downpipe as far as I know. The manifold I ran for 5-6 years after was a custom made one by a local fabricator and was less than the tomei one and never cracked once or even looked like it was going to, and that was without a flexi as well.
My Greddy manifold has a flexi in the downpipe and a flexi in the wastegate return pipe. Still hasn't stopped it from cracking though. When Hayward and Scott welded it up for me they said there's nothing that can be done to prevent it from cracking again as the issue lies in the crap material used. That's why a lot of manifold fabricators are using steam pipe as it's rediculously thick and copes with the heat better. Not sure how the welding can be improved though as that seems to be where mines cracking at the moment!?!
Full Race
Last edited by Actual_Ben_Taylor; 04-11-2013 at 13:05.
WOW, This was all going on in my build thread despite the fact I'm getting Warby to make me a custom manifold to replace my Greddy TD06 manifold as knowone makes one anywhere near what Warby can.
lol lol lol. chuckle.
Making exhaust manifold is not rocket science. But there are few things too look at. You need good material, thick enough, good welder that knows a think or two about welding heat zone, and how the material reacts with high temps. Thats why you get the crack just by the weld and not on the weld couse the material molecular structure is not the same where the welding heated it, it becomes stiff, and cracks easy if you put weight on it. Manifolds are not designed to carry the turbo. You need to make braces that will take the turbo weight.
I bought used Hdev manifold. Putted it on my car and it didnt seal properly on the engine side. I then machined both flanges, puted it back on and it lasted few days before it started blowing again. Then I made a brace that connected my turbo elbow(where on the downpipe side) to the gearbox, so its fixed on 2 points to the engine. And today 1.5 year later it is still all good. And when you look at the manifold it looks rusted, but still works great!
I bet a chinese cheap manifold wont crack if you make braces that will suport the weight of the turbo, even on topmount.
Some ideas from google
Its the vibration that makes manifolds crack - the metal work hardens, goes brittle and cracks. Bracing is essential.
Ben, did you have the wastegate and screamer pipe hanging off the manifold? Bet thats why it cracked.
Ford Cossie's seem to run them a lot.
Warby. Wanna make one of them as well lol.
What was hanging off that though? Wastegate and screamer? Was it braced or vibrating about stressing the metal ?Full Race
This.
Stainless steel work hardens when heated, only way to avoid this is use inconel.
They use it for f1 manifolds. Its expensive.
Mmmmmm inconel.
Yes, wastegate and screamer on there, not braced, same as pretty much every other kit on the market...
Just cause everyone does it doesn't make it right...
Posting Permissions
Reply With Quote
