Modifying turbo

[Adamvr93]

Wasn't really sure where to post this so I thought I'd just do it here..

Does anyone know if it's possible to run welds on the walls of the Exhaust inlet of a turbo and then grind it smooth to decrease the diameter and make the turbo spool quicker?

It might be a dumb question but I'm having some serious turbo lag and need to do something about it lol
It's not for a commodore btw it's for my little turbo excel project... But I thought I'd ask here seeing as though I'm already a member ignite forum...

Any other ideas the help the turbo spool quicker would be great to hear too...

Thanks guys

[soop]

That wont decrease lag, it will just create allot of back pressure in the exhaust manifold, you'll need a smaller exhaust housing.
What turbo is it, and how big is the engine?

[Adamvr93]

Oh okay... I thought it would lol

It's a t28 0.42 a/r compressor and 0.86 a/r exhaust housing...
It's on a 1.5l sohc Hyundai engine
It's making good power.. But it spools very slow and i don't get full boost which is 12psi for now until about 4500 revs..

I knew it was gonna be too big when I bought it but I couldn't find one with a smaller exhaust housing.. It's just a cheap turbo off eBay..
I'd get a smaller housing for it but i don't know where to get one from and I'm not sure if a genuine Garret one will fit..

[dylanstone]

I knew it was gonna be too big when I bought it but I couldn't find one with a smaller exhaust housing.. It's just a cheap turbo off eBay..

theres your problem lol

[soop]

Try and get hold of a VF11 off an RS Subaru ( I think its VF11).
Not sure on the particulars but they're quiet small, full boost at 2500-3000rpm on a fairly ordinary 2ltr.

Here's a REALLY small turbo, its a secondry off a twin turbo legacy.
http://cgi.ebay.com.au/JDM-98-Legacy...item19c00dee39

Might be just right depending on your application.

[Adamvr93]

lol dylanstone, i was waiting for someone to say that :P

thanks for the info mate i will look into those turbos or try to find a smaller exhaust housing to suit it

[rb26dett]

T2 off a nissan exa?