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Discussion Starter #1
Hi guys/gals, I'm a first time user here. OK, I just parked my Z for the winter and the 90 Sentra XE is on the road. However, it's in need of more power. Could anyone either tell me, or point me to a FAQ/Search feature, if any SR20 parts can cross over to this motor. I have a turbo at home waiting for the Sentra (it's from a Mitsu Starion, and I have the manifold from that car so I can use the flange). I need to know if an SR20 manifold can bolt up to the GA16 motor, or if there is a turbo manifold available for this manifold.

I apologize in advance if this is a tired, 100-times-a-day question. I'm a noob here, so bear with me:)

Any help is appreciated. TIA...
 

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no the sr20 manifold wont bolt up to the ga16i engine... youll have to get a costum one for you appz.... you probably can get yourself an adapter to bolt it to your current manifold but youll have to make it done costum too but would be cheaper than a manifold.... heres a link of a ga16i tweaked turbo.... youll get the idea !

http://www.exaclub.net/gallery/arch1/alex/alex.htm
 
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Thanks a lot for that! This is bad, I'm really starting to get ideas now:)
 

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antdagreat said:
could you do the same thing to the e16i? using the e15t headers
Yes but there are many other modifications that you will have to do, to make it all work properly.
 

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RiceBox said:
Yes but there are many other modifications that you will have to do, to make it all work properly.
***** Yes, that's correct. Thanks Marty for the link. I found it to be very interesting indeed. I wish the author went into more detail in regards to how he went about richening up the mixture under boost. Without that knowledge, bolting on a turbo will detonate your engine for sure. I know of various ways that are used to accomplish a proper fuel curve, but I'd like to know what this guy did to HIS car. Cheers everybody!
 
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Easiest method would be a rising rate fuel pressure riser - crude but effective. You could get more sophisticated and use an Apex'i SAFC (I have one in the Z and it's great) but that's gonna cost quite a bit more (although in all honesty it really is worth the money).

For anyone who is interested in getting one, the best price I've found on them (AFC) is http://www.german-autowerks.com (last I saw they were $290 shipped).
 

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wath about changing the AFM place to get it before the turbo ??...
or adjusting the screw in it ??? ;)
 
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Hmmm, didn't know I could do that on the Sentra. This is the first time I've looked into modding it, and the only work I've had to do to it in the 2.5 years I've had it, is change the alternator and the brake pads. I'll look at the adjustment, but honestly, it seems that might cause problems. Leave it as it is, and risk running lean on boost, or adjust it for boost, and run rich as hell when not boosting. I may be way off base on this, like I said, I've not done anything to the motor yet, so maybe you have more insight on this issue. If so, please let me in on it:)
 

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well boosting /not boosting should use a bov that recirculate the air into the intake but past the AFM...so it shouldnt get recounted as Air flow....wath can be done is to get it back before the turbo but pass the AFM... any car can withstand a little rich mix for couple seconds (time being before comp get the reading from o2 sensor) better running rich on turbo setup then lean !!...
 

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Icy Hot Stunta
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RezidentEvil said:
Easiest method would be a rising rate fuel pressure riser - crude but effective. You could get more sophisticated and use an Apex'i SAFC (I have one in the Z and it's great) but that's gonna cost quite a bit more (although in all honesty it really is worth the money).

For anyone who is interested in getting one, the best price I've found on them (AFC) is http://www.german-autowerks.com (last I saw they were $290 shipped).
A SR20 manifold won't even come close to bolting up to a GA16. You will need to make a custom manifold for a mitsubishi turbo. A fuel pressure riser is the wrong sort of regulator to get. The best route would be to get a JWT ECU. If you don't have any money, then a boost dependent rising rate fuel pressure regulator is your best bet, get a 10:1 proportinal rise. If you combine that with an AFC, it might be sort of ok for low boost, like no more than 6-8 psi. I really recomend the JWT ECU however.

Mike
 
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