Re: S engine w/L-jet

[nizam@domain.elided]

Giovanni, all.

The L-Jetronic system seems to handle the higher compression pistons 
just fine.  Case in point; Phil Mason at Phil's Foreign Car service 
built a high-strung engine for a 1984 GTV6 with 10.5:1 pistons and 
high-lift cams (Sperry regrind, I think it was) and that car is still 
being beaten on at Laguna Seca last time I was there.  It's quite the 
machine.  That was back in 1986.

My own Motronic conversion project has taught me that you could run a 
hot street engine with a stock L-Jet setup but to fully realize the 
engineering of the newer engine, e.g. the S motor, put in ALL the 
S-stuff in it.  This includes intake runners, computer, fuel injectors, 
all the sensors, AFM, catalytic converter etc. etc.  The first time I 
cranked over my S-motor in my car with a mishmash of S-stuff and 
Verde-stuff, it did run but it was not quite "there" if you know what I 
mean.

When I dyno'ed the car back then (1997) it only put out 151bhp at the 
wheels!  All that work and I had a Verde with even less torque!

I haven't dyno'ed the car since I swapped out all 164S-parts but if the 
seat of my pants is anything to go about, a lot has changed.  Power is 
seamless (like the 164S), and it goes from gutsy at around 2K rpm to 
contagious at 4K rpm to YEEEEEEHAAAAA at 6.5K rpm.  It redlines at 7K.

You could do it in stages, like I did, but you won't be satisfied until 
you reach the end of the journey proper.

Nizam

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End of alfa-digest V7 #1328
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