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Re: My 417" W9 Turbo Motor On Dyno (LONG)
[Re: HotRodDave]
#767248
08/10/10 08:31 PM
08/10/10 08:31 PM
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Joined: Jan 2003
Posts: 8,547
State College, PA
RyanJ
OP
moparts member
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OP
moparts member
Joined: Jan 2003
Posts: 8,547
State College, PA
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Quote:
Would gas porting the pistons have helped? Seems to me the sides would not get as hot if you had a more positive ring seal as in no blow torch blowing between the piston and wall
No, would actually make it worse.
Gas porting is just trying to pressurize backside of ring for better ring seal.
This deal, these motors run rich, so you don't burn hole through piston/sink valves etc with excessive temps... but you have alot of excess fuel in chamber/piston top & when it detonates... the rich condition accelerates the breaking of piston (it's the fuel that feeds the fire so to speak) Same deal as when a N20 motor detonates when rich & knocks ring lands out. This did'nt even come close to melting head/gasket/valves/plugs etc. This was purely a detonation deal... Just need lower timing & or better fuel to keep it form detonating. Also inlet temps are high on a blow through deal with no intercooler, that's really what the methanol injection is for, it's a type of chemical intercooler.... plus if I inject it into the hat it helps with octane... what we inject into the turbo is gone before it ever gets into carb.
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Re: My 417" W9 Turbo Motor On Dyno (LONG)
[Re: RyanJ]
#767249
08/16/10 11:39 PM
08/16/10 11:39 PM
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Joined: Jan 2003
Posts: 14,515
So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,515
So. Burlington, Vt.
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interesting read.
sounds like you had quite a dyno thrash, and learned some stuff along the way.
ive never dynoed a turbo motor, but have dynoed a few blow through supercharger motors.....and had the opportunity to try some custom blow through carbs as well.
my experience with them was this......
they didnt work at all when used as a N/A carb.
same problems as you described.......super rich everywhere.
installed the carb hat.....and they worked fine.
give it a try if you put the motor back on the dyno.
1000hp.......that should get your attention when you mash on the loud pedal.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
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Re: My 417" W9 Turbo Motor On Dyno (LONG)
[Re: fast68plymouth]
#767250
08/17/10 10:28 PM
08/17/10 10:28 PM
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Joined: Jan 2003
Posts: 8,547
State College, PA
RyanJ
OP
moparts member
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OP
moparts member
Joined: Jan 2003
Posts: 8,547
State College, PA
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I ran my old C&S 900 blow through & the 850 QuickFuel Blow through & the 950HP BT N/A. yes they just run really rich (like 9.5:1? off top of my head), but will make a "clean" dyno pull.... this Pro Systems is not a rich problem... it's hard to describe exactly what it does, but whatever happens only happens within last 1/8 throttle opening... We can load it to 7/8 throttle & it is rich, but running fine & "clean" & then all sudden you go that last 1/8 throttle wide open & all hell breaks loose. I don't really care, it's on it's way back to PS & I will run my homemade 950.
The new Diamonds arrived today, Wirstpin yesterday, rings last Friday. Block is machined, crank will get balanced tomorrow, but I won't have time to work on it until Thursday night. But should go back together pretty quickly...
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Re: My 417" W9 Turbo Motor On Dyno (LONG)
[Re: RyanJ]
#767251
08/18/10 03:22 AM
08/18/10 03:22 AM
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Joined: Sep 2005
Posts: 1,328
St. Louis, MO
mopardamo
pro stock
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pro stock
Joined: Sep 2005
Posts: 1,328
St. Louis, MO
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Hello, Just and awesome thread to read. Thank you Ryan! Damon 
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