procharged 490bbc lost oil pressure
11-10-2008, 08:48 PM
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procharged 490bbc lost oil pressure we planned on going to the track this last weekend but it never got warm enough so we went to the dyno instead to see what the new py3400 would put down on the mustang dyno, I love the new yank converter just put in last weekend after frying my other converter
The engine combo is a procharged f1 490, built 4l80e bb2extra365, comp 238 248 590 609 114 hydraulic roller, accel dfi injection, 160 injectors, on E85
the spark advance is 21 deg at 5500 thats all we turned so far
17PSI OF BOOST and it only made 655hp and 737 tourqe im NOT VERY HAPPY, and then after the 4th pull we restarted the engine and the oil pressure would not come up above 4psi SO WE PUSHED IT ON THE TRAILER absolutely no funny engine noises no knocking like a bearing turned or lifter ticking it only run for probably 8-10 sec. at 900rpm before we shut it back off after we seen very little oil pres, engine oil looks fine on stick, outside of the oil filter looks fine and it fires so no cam gear problem, we did change oil pressure gauge when we where still at the dyno it read no oil pressure just spinng the engine by the starter not firing, what do i need to look at before i pull the engine. I think if the oil pump drive shaft was broke it would no make any pressure right? PLEASE HELP the engine only has 950 miles on it it is a street truck that i play with almost every weekend 1000hp/tourqe is my goal just bragging rights, the 655 is flat out scary right now on the street with full slicks ITS A TRUCK thanks for any advice on the rwhp problem and oil pressure problem
The engine combo is a procharged f1 490, built 4l80e bb2extra365, comp 238 248 590 609 114 hydraulic roller, accel dfi injection, 160 injectors, on E85
the spark advance is 21 deg at 5500 thats all we turned so far
17PSI OF BOOST and it only made 655hp and 737 tourqe im NOT VERY HAPPY, and then after the 4th pull we restarted the engine and the oil pressure would not come up above 4psi SO WE PUSHED IT ON THE TRAILER absolutely no funny engine noises no knocking like a bearing turned or lifter ticking it only run for probably 8-10 sec. at 900rpm before we shut it back off after we seen very little oil pres, engine oil looks fine on stick, outside of the oil filter looks fine and it fires so no cam gear problem, we did change oil pressure gauge when we where still at the dyno it read no oil pressure just spinng the engine by the starter not firing, what do i need to look at before i pull the engine. I think if the oil pump drive shaft was broke it would no make any pressure right? PLEASE HELP the engine only has 950 miles on it it is a street truck that i play with almost every weekend 1000hp/tourqe is my goal just bragging rights, the 655 is flat out scary right now on the street with full slicks ITS A TRUCK thanks for any advice on the rwhp problem and oil pressure problem
11-11-2008, 08:00 PM
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everybody says i need more timming but i have NO knock sensor on he engine so we are trying to go up easy
the 21deg. of timming is making that kinda power loss
the 21deg. of timming is making that kinda power loss
11-12-2008, 03:45 PM
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11-12-2008, 05:26 PM
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OOOOOO yes I feel like a 5 year old that just got a new bicycle for christmas
My oil pressure problem was somthing blocking the line to the gauge so even thow we change gauges at the dyno the line was still block
I pulled the dis. and put a prime tool on and got 40 psi on a battery drill
I also talk to Bob at exotic performance to day one hell of a nice guy, gave me alot of little odds and ends to check for my plato on boost and all around gave me some good pointers Thanks alot Bob were going to the track or back to the dyno sunday O hell ya
My oil pressure problem was somthing blocking the line to the gauge so even thow we change gauges at the dyno the line was still block
I pulled the dis. and put a prime tool on and got 40 psi on a battery drill
I also talk to Bob at exotic performance to day one hell of a nice guy, gave me alot of little odds and ends to check for my plato on boost and all around gave me some good pointers Thanks alot Bob were going to the track or back to the dyno sunday O hell ya