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Using T6 injectors with 760/960 MAF? LH2.4

lookforjoe

Making Volvo Parts Fit
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May 27, 2008
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Rockland County, NY
Note NA, not for turbo use - I'm using 18lb Bosch ...700 yellows with my LH2.4 conversion (stock 4cyl MAF), at 50psi base pressure. 10.7:1 compression, big valve head, 35/75 cam, 3" intake w/960TB. Rather than retard the timing, I'd like to bring up the fueling to take advantage of the greater timing values. As it is now, it runs way too lean @ part load (15+AFR) & I'm not pushing it at all.

Trying to figure out which injectors work within the 012 & 025 MAF adaptive working range - have people used the 30lb ... 759 red's common to LPT turbo x70's?
Or the 24lb ... 832 pinks from T6's?
As far as I can tell, stock NA 6 cyl injectors are all in the 19-20lb range. I do see that +T's go < 45lb.

Couldn't find a thread that covered the specific correlation between the two MAF's and the cc/lb rating of injectors known to work with...

If 30lb'ers will work, I have those, 24lb'ers I'll have to procure....





 
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Leave stock maf, the 012 also messes with timing..cant remember how but i think it advances a bit. A less but still possibly dumb idea, have you tried just putting the 30lbs in and seeing what happens? I think its too big a jump for lh2.4 to adapt to but youve already got them...and its a better idea than an 012 on na car
 
Leave stock maf, the 012 also messes with timing..cant remember how but i think it advances a bit. A less but still possibly dumb idea, have you tried just putting the 30lbs in and seeing what happens? I think its too big a jump for lh2.4 to adapt to but youve already got them...and its a better idea than an 012 on na car

If it retarded the timing, that wouldn't necessarily be a bad thing... 30lb'ers is a 50% increase - I would think that would fall outside the adaptive range (30ish%?). I don't want to wash my bores with fuel.... I think I'd feel more comfortable experimenting with something in the 24-25lb range like the 832's - that should still fall within the adaptive range for the stock MAF, I think..
 
It advances im pretty sure. It wont wash bores immediately, that takes time. If its running real rich you will know pretty quickly, just do an ecu reset first. But i do agree 30's are a bit big for stock on a naturally aspirated motor.
 
Leave stock maf, the 012 also messes with timing..cant remember how but i think it advances a bit. A less but still possibly dumb idea, have you tried just putting the 30lbs in and seeing what happens? I think its too big a jump for lh2.4 to adapt to but youve already got them...and its a better idea than an 012 on na car

Tried this. Actually runs quite well. I tried jacking the fuel pressure to 70psi with the 18.25Lb'ers, and it wasn't happy at all.
 
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