At what power level has people pushed water with a 4-bolt setup?
08-21-2008, 05:49 AM
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At what power level has people pushed water with a 4-bolt setup? Just curious as to what power levels people had started pushing water with a turbo... 
08-21-2008, 08:46 AM
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I was around 850rwhp last year and never pushed a drop with ARP's and Cometics....at 18psi.....but I bet I was on the edge... a lot will depend on timing, AIT's, cam,deck thickness, etc. kp has some good info on it.
08-21-2008, 09:11 AM
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and I don't have anything special...ETP heads, std ARP head studs at 80 ft-lb and GM 5 layer MLS gaskets
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08-21-2008, 11:09 AM
#10
right.. and you way 400 less which puts you in the ball park with what i did. i am sure you are running much better fuel and your set up should be more efficient. i would expect you to get away with another 1-150 horse with the fuel and lower backpressure.
call it 1200 horse is my guess for you before you move water
call it 1200 horse is my guess for you before you move water
08-21-2008, 11:42 AM
#12
The new setup, LS2 block, newer AFR heads with the deck closed up a little more and 5 layer MLS havent pushed a drop in 100 passes. I am running C16 exclusively this year though too, after fooling with pump gas/meth 104 unleaded, questionable quality 110-112 octane race fuel on the last engine I'm sure thats where a lot of problems were.
I dont load the engine much the last 200-300' like a turbo car though and scream it through the lights, I can care less about 1/4 mph, so that helps I'm sure. Unfortunately with an A2A I have to wait for some better weather to make some better power, so I'll what happens in a couple months.
I dont load the engine much the last 200-300' like a turbo car though and scream it through the lights, I can care less about 1/4 mph, so that helps I'm sure. Unfortunately with an A2A I have to wait for some better weather to make some better power, so I'll what happens in a couple months.
08-21-2008, 03:54 PM
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Brian I've asked around and basically everyone who has gone low 8's with 4 bolt setups has been pushing water. For most that is equating to MPH over 160mph at 3200-3400 raceweights. MMouse doing 155mph at a heavy 3800-4000 lbs equates to the low 160's in MPH. I'd say mid 8's might be okay but if you get into the low 8's (no reason it shouldn't you have a great build) you might see it pushing some water.
Ever noticed those custom little tanks that the OH Boys starting runnign sometime last year I think it was. Looked like little water towers with a radiator cap I think. I think their idea is that water will be pushed out the system, but they want it to get pushed up, so when it will gravity feed back down. Maybe someone else could explain it better.
Ever noticed those custom little tanks that the OH Boys starting runnign sometime last year I think it was. Looked like little water towers with a radiator cap I think. I think their idea is that water will be pushed out the system, but they want it to get pushed up, so when it will gravity feed back down. Maybe someone else could explain it better.
08-21-2008, 05:17 PM
#14
Brian I've asked around and basically everyone who has gone low 8's with 4 bolt setups has been pushing water. For most that is equating to MPH over 160mph at 3200-3400 raceweights. MMouse doing 155mph at a heavy 3800-4000 lbs equates to the low 160's in MPH. I'd say mid 8's might be okay but if you get into the low 8's (no reason it shouldn't you have a great build) you might see it pushing some water.
Ever noticed those custom little tanks that the OH Boys starting runnign sometime last year I think it was. Looked like little water towers with a radiator cap I think. I think their idea is that water will be pushed out the system, but they want it to get pushed up, so when it will gravity feed back down. Maybe someone else could explain it better.
Ever noticed those custom little tanks that the OH Boys starting runnign sometime last year I think it was. Looked like little water towers with a radiator cap I think. I think their idea is that water will be pushed out the system, but they want it to get pushed up, so when it will gravity feed back down. Maybe someone else could explain it better.
Yep thats basicly what they have going on John.
I wasnt pushing water on my passes between 116-120 mph 1/8s..
That was between 16 and 20 psi.
I pushed a lil water on the dyno with 26 psi......
and then lifted the heads after the 1/8 on 26 psi doing 126mph....
Ill still be running a 4 bolt setup this time.....
Double O-Ringed with copper gaskets... we will be making an overflow/ water catch also.
Ill be posting up pic's here in a lil bit.... need a lil more $$ still
08-21-2008, 10:37 PM
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It seems like around 1200ft lbs at the crank they start to push water with aftermarket heads and copper gaskets. These days the 6 bolt parts are getting more common, if you think you will be pushing the engine, I think its best to start with the 6 bolts. If you have a 4 bolt that you must use, more power bites will help your car run faster before it pushes water.
Kurt
Kurt
08-22-2008, 05:20 AM
#20
I've already been 158 pedaling (went 118 mph in the 1/8 but had been 125 mph on the same tuneup two runs before) we're guesstimating based on the 1/8 mph drop that it shouldve been ~165 in the 1/4 on that run
and I don't have anything special...ETP heads, std ARP head studs at 80 ft-lb and GM 5 layer MLS gaskets
and I don't have anything special...ETP heads, std ARP head studs at 80 ft-lb and GM 5 layer MLS gaskets