Author Topic: 4 passes on a new motor WTF (Read 6235 times) Tweet

« **on:** September 10, 2003, 04:02:00 PM »

I made 4 passes on a new motor and bent the intake valves. I installed a JE 1397 and a FMS .385 intake cam with a stock intake on the exhaust side. I degree them in at 107 intake and 105 exhaust. I thougth is was a safe starting point. I put a 150 miles of street riding before I had it dyno tuned. It made a 192 hp and 111 ft. lbs of torque. I went to the track and made 4 passes and sprayed the last one and messed the motor up. What should I have set the intake at? Tearing it apart now but any help before I put it back together this time would be nice.

Steve A · « **Reply #1 on:** September 10, 2003, 04:26:00 PM »

Check the valve/piston clearance with Pladoh or modeling clay - should probably have thirty five thou or so clearance - minimum. Make sure the cutouts in the pistons match the valve head. Don't put pistons in backwards.

Chet · « **Reply #2 on:** September 10, 2003, 04:50:00 PM »

What springs were used?

« **Reply #3 on:** September 10, 2003, 07:54:00 PM »

I used the stock springs.

Nosgsx1300 · « **Reply #4 on:** September 10, 2003, 08:15:00 PM »

stock springs?!?! I bet they floated
Nitrous makes the motor spin up so quickly.

portagee · « **Reply #5 on:** September 10, 2003, 08:30:00 PM »

i got 8 passses out of mine. stock springs were my problem.they just dont work with spray.

SLEEPERBUSA · « **Reply #6 on:** September 11, 2003, 04:50:00 AM »

Yup, I have seen several paople float stock springs!

« **Reply #7 on:** September 11, 2003, 05:15:00 AM »

I sprayed my stock motor (100 shot wet) with two intake cams for a year and half with no problems , so I thought I could get away with it.

portagee · « **Reply #8 on:** September 11, 2003, 08:27:00 PM »

i went 168 on a stock motor with spray for a while.eventually...she go boom

396 · « **Reply #9 on:** September 12, 2003, 09:58:00 AM »

Yep, his went ka boom!

portagee · « **Reply #10 on:** September 12, 2003, 08:44:00 PM »

i was just testing for my friends.now all you guys know what not to do

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Author Topic: 4 passes on a new motor WTF (Read 6235 times) Tweet