Inline 250 - T3 Turbo - w/ Video

[Tazfink]

Originally Posted by boucher racing

I got around to tuning it a little. I also put a magnaflow performance muffler on it with 3" and it turns out flush, right in front of the rear tire. It sounds deeper and not as much turbo whistle, but it still sings under driving boost. I re-jetted it down to 66 jets with a 4.5 pv. It seems to be running leaner and better ( I think I was running really fat earlier ) I will try to post a new video with the new exhaust.

Ghostwhite - go for it. It is important to get the right turbo, plumb it right, get a good condition used 350cfm Holley 2 bbl and make it blow thru. All else is exhaust routing. If you have any questions, ask me. I'll walk you through it. I've got pics documenting the whole procedure.

"...used 350cfm Holley 2 bbl and make it blow thru." What is that? Pull the choke plates out of it? Just curious.


BTW.... KICK A$$ PROJECT!!

[boucher racing]

Taking the choke horn off is part of the blow thru mod. There are a few others that seal it up to allow it to accept boost. This is the best link on how to do it:

http://www.hangar18fabrication.com/blowthru.html

it seems overwhelming at first, but its quite easy.

[boucher racing]

The engine rebuild has started. I was tired of oil shooting out of my oil pan caused by worn rings and blow by. I am going .030 over, turbo spec cam, stock internals, hogged out intake to accept holley 2bbl, HEI and these :

new old stock Forged TRW flat top pistons. hard to find item

[boucher racing]

here is an updated pic of the engine bay. I had the engine rebuilt with .030 over forged pistons, Lunati turbo spec cam, new internals. I hogged out the original intake to accept a 2bbl Holley. I will be adding a HEI unit. I am really excited to fire it up soon.

[chevylookin]

Nice project, I cant wait to do this to my 230 someday. Keep up the cool work!

[boucher racing]

I finally got a chance get a short video of the turbo attached and a short idle / rev. It sounds so much after the engine rebuild.

enjoy!

YouTube - firstturboattachrun.avi

[awbrown]

It will be interesting to see how much boost it makes and what it puts out HP wise .... do you have a boost retard on it ? if so who's is it ? thanks

[ole dollor]

i would like to see how this turns out...like it so far..good work

[longbed67]

I am hoping that by running a DEI titanium heat shield over the turbine, and DEI titanium wrapping the down pipe and running a 3" downpipe with less turbine back pressure, in addition to the meth injection, I can limit the effects of heat soak. With the smaller down pipe and having extra exhaust piping setup under the hood like you do, and if you are already experiencing heat soak, you might want to run an intercooler. Also how many core radiator are you running? And did you check your setup with a wideband or plugs, because if your running too lean or too rich you can run way HOT. Since you have everything tore apart right now, I would also consider wrapping your up pipe and down pipe to help push the heat out the tailpipe.

And your 100% right about turning up the boost.... I suppose that's thats always a project for down the road... 4 core intercooler and 18-20lbs of boost....

[boucher racing]

Originally Posted by longbed67

Also how many core radiator are you running? And did you check your setup with a wideband or plugs, because if your running too lean or too rich you can run way HOT. Since you have everything tore apart right now, I would also consider wrapping your up pipe and down pipe to help push the heat out the tailpipe.

I am running the original radiator. When I say HOT, its is not overheat HOT, I took it out this summer (103 deg), was in stop and go traffic and it did fine. So, it runs at the right temp. It has never overheated.

I am running a AEM wideband. My afr's are: cruise 14-16 and WOT 10-11. When I pull the plugs, it does not get good fuel distribution, I think mainly because of the intake setup. Two short runners and two long outside sweeps. Inner plugs burn correct, outside plugs burn rich.

I have thought about running a turbo blanket, from some of the youtube vids, it really looks like it contains the heat! Good idea.

Does the same concept work with wrapping the up/down-pipes?

[longbed67]

Originally Posted by boucher racing

I am running the original radiator. When I say HOT, its is not overheat HOT, I took it out this summer (103 deg), was in stop and go traffic and it did fine. So, it runs at the right temp. It has never overheated.

I am running a AEM wideband. My afr's are: cruise 14-16 and WOT 10-11. When I pull the plugs, it does not get good fuel distribution, I think mainly because of the intake setup. Two short runners and two long outside sweeps. Inner plugs burn correct, outside plugs burn rich.

I have thought about running a turbo blanket, from some of the youtube vids, it really looks like it contains the heat! Good idea.

Does the same concept work with wrapping the up/down-pipes?

Sounds like your afr's are alright.... I would agree with the intake being a cause of unequal fuel distribution. This is why I went with the clifford. The total volume of the runners is much larger to minimize the effect of the unequal length.

The concept with wrapping the up/down pipes is the same as the blanket. Wrapping the up pipe maintains the volume of the hot exhaust and prevents cooling and decreasing volume before going through the turbo. Also by doing this it prevents excess heat from entering the engine bay. By wrapping the down pipe, you help to maintain exhaust velocity as it exits the the turbo and goes out the tail pipe. Again by wrapping and maintaining exhaust velocity you are minimizing the effects of heat soak in the engine bay by pushing it out the tail pipe.

[Underconstruction66]

Disregard, I found all my missing items. I reread it one last time.