So you may have checked out my project in my other thread, I am looking to turbocharge it in the next few weeks/months. I need opinions on what turbo to buy. The manifold i am buying has a t25 flange. I have read that i can use a t2 or a t25 or a t28. The engine in question is a g13b, 1.3 liters dohc, with 10-1 compression. I will be starting at 5psi, and maxing at 10psi at the drags. Which turbo is going to be best suited for my application?
those are all the t2 family... and asking which one is a BIG question...
with the highish c/r it should be a lot of fun even with a small turbo... i'd ask around... do a lot of reading (corky bells "maximum boost" is the standard starter reading)
this is a great web page for maping your compressor... http://www.lovehorsepower.com/joomla/index.php?option=com_content&view=article&id=4&Itemid=88
and this is another very basic "what turbo should I use calculator" web page http://www.turbofast.com.au/javacalc.html
er... also... what are your plans for engine management...
if it's a stand alone (say megasquirt?)... I'd suggest getting it going and a decent NA tune before you add the boost...
If you decide to go with T-22 (as used on Nissan 300ZXTT), let me know, I found a map for it.
Carter
i have megasquirt to go in, and individual throttle bodies.
donalson wrote: if it's a stand alone (say megasquirt?)... I'd suggest getting it going and a decent NA tune before you add the boost...
This is what I did and you no what? I wouldn't do it again.
Why bother tuning in spark and fuel tables that you are just going to throw away? Other than warm up enrichments, everything will change.
I wish I had just bolted on the turbo from the get go.
i have heard that the t2 is going to spool too fast and not want to rev up to the engines 8500rpm. i have a buddy selling a t25 for 160 with negligible shaft play and inlets and outlets.
ditchdigger wrote:donalson wrote: if it's a stand alone (say megasquirt?)... I'd suggest getting it going and a decent NA tune before you add the boost...This is what I did and you no what? I wouldn't do it again. Why bother tuning in spark and fuel tables that you are just going to throw away? Other than warm up enrichments, everything will change. I wish I had just bolted on the turbo from the get go.
Yeah I was going to say, when we did the XR4's MS we read horror stories about tuning it with the stock turbo before slapping in bigger injectors and turbo. Guess what, people who try to make changes to a map with one setup applied to another end up with more work than just building a new map with a new setup. We had ours up and running in a day, driveable in a week of a couple hours here or there tuning and driving (pre-Autotune). After a month we were confident enough to start really driving it around the city. We still haven't dyno'd it but we've edited our map all the way up to 30psi (MAP sensor limit) and have no pinging, our AFRs are solid, and quite frankly it pulls like a freight train. For $50 I'd consider Autotune software since it sounds like it would have cut out alot of tune time...
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