singled 1j help

[chuckmuska2005]

I have singled my 1jz and am looking for a downpipe to fit. I have a gt45 turbo and have come up with two laternatives. 1, buy the flange from boostlogic, it's a v-band clamp that goes onto the turbo and has a 2 bolt flange; goes from 4" to 3" on the 2 bolt flange and I would then run a three inch bolt on exhaust. links posted below

boostlogic flange: http://www.boostlogic.com/xcart/product.php?productid=83&cat=6&page=1


bolt on downpipe: http://cgi.ebay.com/ebaymotors/ws/e...ame=STRK:MEWAX:IT&viewitem=&item=200256393780

On the flip side of this option. I wonder if the bolt on down pipe will hit the fire wall due to being set back from the other flange.


2. I looked around ebay and found this vband flanged downpipe. It has a 3.5 inch v-band flange, which I think but not sure, that will match up with the v-band flange on the turbo and use a v band clamp to seal them together. Link posted below.

http://cgi.ebay.com/ebaymotors/ws/e...ame=STRK:MEWAX:IT&viewitem=&item=330272530877


Please help:3d_frown:

 

[suprahero]

What does the back of your turbo have on it? Is it set up for a 3"vband clamp? If so then the ebay downpipe should work, but they don't warranty it to fit if you read the small letters. You should be able to make it work, but it may not be a simple bolt up installation. Good luck.

My new turbo will be here tomorrow and I had to order a 3"vband clamp for my exhaust. Luckily for me I have a welder and can make it work............hopefully.

 

[chuckmuska2005]

I just realized that I would have a gap from where the dp ends and where the next segment of exhaust meets. I have a gt45 turbo, it has a 4" outter diameter and a 3" inner diameter outlet

 

[suprahero]

Are you sure it doesn't have a four inch inlet and a three inch outlet? What is on the backside where the downpipe would hook up? It's probably a 3" vband clamp, but it may not be.

 

[Bigzavs]

is this an ebay GT45 or is it an actual garrett?

 

[chuckmuska2005]

its an ebay. ill snap a pic.

 

[chuckmuska2005]

Here's the OD:

Here's the ID:

 

[suprahero]

It's hard to tell from those pictures, but is that made for a 4" vband clamp? I wouldn't think so because I couldn't find one at Summitt. I wish I was more help but I can't tell what it's going to take to mount that to the downpipe. Maybe you should pm the turbocharger experts on here. You can find them on the main page on the Expert section. Good luck.

 

[Bigzavs]

ya thats looking like a 4" v-band on that thing. you can either run a full 4" turbo back, or get a 3" downpipe and make a reducer for it

 

[suprahero]

I checked Summitt Racing and they didn't even offer a four inch vband clamp. I"m sure someone does though.

I found one on ebay, but it's going to cost you about a hundred dollars.
http://cgi.ebay.com/ebaymotors/4-V-...Q_trksidZp3286Q2em20Q2el1116QQitemZ8031373542

They also offer a 4.25" so make sure you get the correct one if this is the route you take.

 

[935motorsports]

There is a 4" downpipe that matches that turbo on eBay.

I don't have the link, but search around on there.

 

[suprahero]

http://cgi.ebay.com/ebaymotors/Down...m14QQhashZitem330272767085QQitemZ330272767085

 

[chuckmuska2005]

Check this out:

You have the flange on the turbo

Then you need a flange for the downpipe of the same size that the turbo is

2 flanges together

Need a proper size V-band clamp

Clamp them together

Then just have your downpipe made off of that flange. Bolt it up to your mid pipe. It would be like running a 3" DP on a stock exhaust. It'll be fine.

 

[935motorsports]

http://cgi.ebay.com/ebaymotors/Down...m14QQhashZitem330272767085QQitemZ330272767085

That is not it. The one you show is a 3" vband, going up to a 4" pipe.

This one has a full 4" on it. It says 3.5", but it looks like 4" in the picture. Anyway, that is the one that matches the GT45 ebay turbo, because it was a kit at one time.

http://cgi.ebay.com/ebaymotors/Toyo...2113879QQcmdZViewItem?_trksid=p4506.m20.l1116

 

[chuckmuska2005]

Don't get me wrong, 4" is bad ass and I'd like to go that route but I'm not tryin to change my 3" exhaust I just bought. Check my build page, I'm getting parts in every day.

 

[935motorsports]

In that case, have a professional weld a 3" vband to the exhaust housing.

 

[chuckmuska2005]

That is not it. The one you show is a 3" vband, going up to a 4" pipe.

This one has a full 4" on it. It says 3.5", but it looks like 4" in the picture. Anyway, that is the one that matches the GT45 ebay turbo, because it was a kit at one time.

http://cgi.ebay.com/ebaymotors/Toyo...2113879QQcmdZViewItem?_trksid=p4506.m20.l1116

That's the exhaust I was eyeballing if I had to go 4". I plan on upgrading when I go emanage ultimate.

 

[chuckmuska2005]

I couldn't just use a 3" dp setup off of ebay??

 

[935motorsports]

No you can't, unless you change to a 3" vband on the exhaust side.

I'd sell that turbo and get a T61. You aren't going to be able to take advantage of the size of this turbo, with a 1.05 AR and 550s. You won't see full boost until 5500 RPM.

You could also buy a .85 or lower size housing and see if you can find one with a 3" vband.

 

[chuckmuska2005]

I just looked and ebay has v-band dp with 2bolt flanges at the bottom???