951rook

Looking for a direct fitment solution. I would like to achieve quicker spooling and plan on boosting 17-19 psi. Any suggestions are appreciated. Thanks,

refresh951

Do you have k26/6. Tough to beat the spooling of a K26/6 with proper mods. May want to look at LR Super 48 DBB.

951rook

Yes I have a 26/6. It's hit 14 pounds at around 4800. I have LR MAF and chips. Tial wastegate 3 in exhaust. Boost is solely regulated by the WG spring.

Black51

Follow dnovak's thread. He's coming up with some innovative stuff.

https://rennlist.com/forums/944-turb...ghlight=dnovak

Other than that, if you don't have access to machining stuff modern stuff is out of the question.

Vitesse has a good, fast spooling turbo. It's pricey, but I've never heard of anyone complaining about the turbo.

You could try Evergreen as well. I have no experience with them, but I've heard they do great things with the stock turbos.

PS: 14 lbs at 4800 rpm sounds like you have a leak. More psi does NOT equal faster spool. It means a faster blowing headgasket lol. Pressure test your intake system. Listen for leaks. The exhaust headers on these cars are notorious for cracking. That would result in a serious lack of spool. You should be feeling the big '80's kick in the ***' right around 4000 rpm.

Tom M'Guinn

A k26 should get full boost much lower than 4800. If you want a true direct fit (i.e., able to use the stock j-boot and all) then look for a 'cheater' k26/8 turbo offered by Vitesse and others. You'll get more oomph with good spool. A good electronic boost controller will help you get the most out of that Tial too...

951rook

I figured the boost lag was a result in the turbo going bad, I'm seeing oil on the intake where the cold pipe meets. Prior to this I was achieving full boost at around 3800. Thanks for replies,

Scott H

3800 is still really slow spool for a /6. It should be in the low 3k RPM range.

Tom M'Guinn

For reference, my Vitesse stage 5 turbo hits 1 bar at 3k rpms,with a Tial and profec controller....

951rook

Ive been looking on the site for some information on the k26 cheater, can anyone enlighten me on the matter? I think I would like to go this route. Additionally, do you think my turbo spooling late because of configuration or intake manifold? I will have to take a look at that when time allows. Hmmm

Paulyy

my k26/6 use to full boost 15psi at 2800 rpm..

951rook

Yes, I understand I have a problem.

CyCloNe!

When you guys say 15psi by like 3k RPM what gear is that in? I assume 4th but just curious

Paulyy

sorry i was only giving a bench mark where the turbo should be at, not telling you that you've got a problem.

What are your goals with the new turbo ?

15 psi at how much rpm?
horsepower target?

ect

Tom M'Guinn

That's a great question. I always think the same thing when people (like me) throw out numbers. Truth is, I can probably get 15psi at 2k if I put it in 5th, left the hand break on a little and found a steep enough hill. My 1 bar by 3k was in 4th on level ground, with no braking and good tire pressure.

951rook

I'm not interested in investing a lot of money into the car. I was rearended last month and the insurance totaled the car. I'd like to be around 280 horse and hit 1 bar around 3k. The engine was just rebuilt by European Autohaus.