Custom made manifold and wastegate selection

[steroidcontaskie]

Hey guys

I want to get my cheap chinese exhaust manifold, downpipe and wastegate replace on my 2jz ge turbo car. Despite all the fiddling with it, it just doesnt have the clearance and layout I want, plus it will probably break.

Any recomendations about where in auckland to get a manifold and downpipe made? Also any ideas about what wastegate to get, the current chinese one is a 50mm HKS ripoff. I am guessing a bigger is better.

Cheers
Edward

[Stott69]

My system is a Sinco manifold, 48mm turbosmart WG, and eventualy will be Sinco dump and WG return. Sinco are based in Hamilton so not to far away. I've had an issue with my WG return but Mike has been happy enough to fix the problem and get it re procoated. Cant fault his Fab work, realy tidy fit

[92mr2paddy]

2nd sinco, hes done both my cars and does amazing work! wastegate size depends on turbo setup, but go for a 44mm or bigger with a 2jz, def wouldnt recomment a cheap wastegate, if it breaks - overboost- leans out - motor goes pop.

[steroidcontaskie]

Cool, I could drop it off to them, any idea what they charge for a manifold and a downpipe?

Because I am running non-decompressed and reasonably low boost I might think about going bigger, was looking at one of those Tial V60 60mm ones.

My cheap Chinese wastegate has already jammed shut while on the dyno. Overboosted to 16psi (spring was 8.7), but fortunately I had set it up for big timing retard, lots of fuel and loads of water meth injection and the engine seemed to survive it ok. Although it did toast my gearbox.

[92mr2paddy]

1100ish for a twin scroll manifold, extra for coating, yea im running a 60mm tial no harm in going too big just a little more cost, downpipes are usualy like 400 i think, just hit him up through FB or his website he will let you know hes good to deal with.

[Stott69]

Yip those prices sound right, can confirm tomorrow when Ive got paper infront of me. Real happy chap with pride in his work. If you can drop the car to him will make things easyer too.

Sinco manifold vers moded stock twin

[steroidcontaskie]

Yea dropping it off would be the best, because I am 2jzge turbo, I have a distributor and a turbo side intake pipe to clear. Makes it all more difficult to do.

[Mr Ree]

Yea dropping it off would be the best, because I am 2jzge turbo, I have a distributor and a turbo side intake pipe to clear. Makes it all more difficult to do.

Thats the exact reason I was too cautious to get one made.

Unless the car is there, or he has made one before for an NA-T in the same chassis, its going to be hit and miss whether it fits or not.

What exactly is your current set up not doing?

[steroidcontaskie]

The whole manifold and down pipe are a bit of a mess. My friend and I had a go at modifying them so they fitted, but he was just learning to weld and we only got a tiny bit of clearance between the down pipe and the manifold and now that the car has been run a bit there is evidence that they are hitting each other.

The wastgate is so close to the sump that I had to shave off some cooling fins to make it fit and one of the Chinese ones has already jammed shut on me.

Also my mate thinks his welds wont hold for long, so I think the best idea is to save up some cash monies and get the whole thing done properly.

Cheers
Edward

[Mr Ree]

One other option is taking your car to a fabricator and having him fix up china factor. Thats what I did and everything is still holding fine after nearly 15,000km of na-t action, alot of which has been at the track too.

GL

[steroidcontaskie]

That would be the other option, I should probably get that priced up too. I have almost finished the tranzmission rebuild, so the car might be ready for making some real power soon

Cheers
Edward

[steroidcontaskie]

I had a talk to Mark at Sinco about options and there was the option of getting a twin scroll manifold made. I currently have a single scroll turbo, but I could replace my chinese one with a better twin scroll on if it is going to make a big difference.

Do you think I will get much difference going to a twin scroll on a 2jzge turbo set up?

Cheers
Edward

[92mr2paddy]

a twin scroll manifold only makes a difference if your turbo is twin scroll, but if you plan to upgrade to a twin scroll turbo later down the track then u might aswell get a twinscroll made up now.

[steroidcontaskie]

I mean, if I got a twin scroll manifold made, would it make much difference if I replaced my chinese single scroll turbo with a name brand twin scroll. Or this difference going to be so small its not worht doing.

Cheers
Edward

[Stott69]

Depends on what you want. I wanted low and mid power because of the auto so twin scroll was a good choice. Twin scroll comes on boost quicker/earluer (I may be wrong, ask again once my cars back on the road)

[evil_si]

A good twin scroll manifold should allow you to run a bigger turbo and still be responsive

[92mr2paddy]

yeap twin scroll spools a bit quicker vs open, sinco also places the runners so they are in the correct firing order.

[Stott69]

Hes done the WG differnt on mine. Also did you find the bottom studs a bitt of a c@#% to do up?

[92mr2paddy]

maybe supra to aristo engine bay a little different, he said about mine it was a mission as he used the large runners and 4inch downpipe wasnt much room left once you have a 60mm wastegate pipe going down aswell, haha

i left the car with him so he put everything on but yeap it looks like a mission!!