3.3L twin turbo questions.
 

Hi, so basically I have a 3.2 now rebuilt with 3.3 pistons and cylinders. Will be running a standalone system. Just wondering if anyone has experience doing a twin turbo twin external wastegate system on a similar application. More so im just wondering if the twin k26 would work, or would it be extremely laggy? If so anybody know about what RPM the boost would build?

also, the k26 I have are from the early 80's audi 5 cylinder turbos..

K26 or 3ldz is bad even with one but two would take forever t spool. Needs smaller turbos for good response. There is a great system available right now in the for sale section for a Carrera intake. Sounds like a great option for you.

K26 for Audi is terrible option. Twin k24 maybe would work.

I'd actually try and find a pair of K16s Used them on a 3.2 to 3.3 Carrera turbo years ago with fantastic results. Yes, twin turbos into a Carrera manifold but used a mustang throttle body for tps ease and IAC valve. AEM stand alone is so tuner friendly and was able to tune it to perfection. If I had the budget I'd build one for myself.
Ditch the Audi dinosaur eggs as they are truly crap for twin use.

Twin k16 VNTs from a 2L TDI motor. ��

K16's will work much better.

http://forums.pelicanparts.com/uploa...1435457909.jpg

Twin VNT-25's, still have to work out the controls. Probabaly will not support the horsepower of the twin K16's but gettin' there will be fun!

http://forums.pelicanparts.com/uploa...1435458135.jpg

HMM, wel lthanks for the reply guys. I thought maybe the k26 from the early audis are a smaller k26, As I was just looking at them the other day and they are noticeably smaller than a 3LDZ. So much so that im surprised there even called a k26 since they are seriously almost exactly the same as the k24 I have from a 1.9td I believe. Strange, I feel like there are soo many variations in this old stuff that you can never follow it.
Basically Ive got a 934 build going and I wanted twin KKK, to make it a bit more era correct as those old 934 cars ran KKK turbos right?
Im not 100% set on going twin but thought it would be very cool.

Ok so you have given me some good ideas for good twin turbos. I really want to use my external wastegate(s) and didnt like the idea of welding shut or blocking off the factory wastegate of say a k16, I want to use the wastegates I have, again for the more genuine look, so I am having a hard time finding the right turbo I guess

This is my first porsche forced induction build, So what about a single large turbo, anybody use holset? Like a hx35w or similar, or would that usually be a laggy thing as well?

HX35 would spool really quick, depending on turbine housing. But, they max out about 500hp IIRC on E10 fuel.

This is a while back, I removed the tin off the carrera manifold and flipped one out, to get a nicer look and then I planned to bring them back individually. Yes one flange is upside down this way, thought about flipping it also but it doesnt bother me much honestly.
So from here I can stay seperate per side and do twin easily ,

Thats just alink to a google image of the old audi wastegate I have, Ive got two, rebuilding them now. I am a little bit set on using this because of the genuine look, as to me it resembles the porsche wastegates alot.

Id be good with 500hp, as I am on a 915, (74 body ) I didnt want to chop it to fit a g50.

Fixed it for you.. if you are staying 915 then I would start stocking some transmissions if you plan on going North of 400 and driving it like it should be driven.... SmileWavy

^ this

are they seriously that weak? do you guys mean whp? I meant bhp.....

there is a guy locally here who has a 3.3 turbo on a 915 beefed up a bit. Runs a k27-7200, he says he has no problem with it, then again he doesnt track the car as I wont either.

K27 with CIS is what for HP?