20 thousandths, right off the top.
05-31-2005, 12:42 PM
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Originally posted by Haulin_in_Dixie
I misunderstood Merrick, I though you were trying to lower the compression. A slight drop will not make much difference. Like Don said, a little less torque till it gets boost.
I misunderstood Merrick, I though you were trying to lower the compression. A slight drop will not make much difference. Like Don said, a little less torque till it gets boost.
I know with the turbo'd gassers, you wanna drop compression, and how this truck will be used, (street/strip), I wanted to relieve as much stress as I could. I don't mind loosing 20HP, if the motor will last me 10,000 more miles.
Merrick
06-02-2005, 10:11 AM
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Honestly, I'll be happy with 50,000, but if it went more, I'd be tickled to death.
Bottom line is, as long as *I* Break it, it's ok, but if something just wears out, I'll be upset. hehe.
Tyler,
Going to make it to IRP next month?
Merrick
Bottom line is, as long as *I* Break it, it's ok, but if something just wears out, I'll be upset. hehe.
Tyler,
Going to make it to IRP next month?
Merrick
06-03-2005, 09:01 AM
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Indianapolis Raceway Park...home of the Indy 500.
Coming up in June, and I can't make it. Already scheduled my vacation for that week, but I'm boing to Michigan!!
If it wasn't so far away, I'd drive down, but it's about 600 miles to Indy from where I'm going (but only 135 from home
)
Chris
Coming up in June, and I can't make it. Already scheduled my vacation for that week, but I'm boing to Michigan!!
If it wasn't so far away, I'd drive down, but it's about 600 miles to Indy from where I'm going (but only 135 from home
)Chris
06-03-2005, 06:56 PM
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Merrick, about the 20 thou you are taking off. I am curious what results you will have. I'm not shure how much affect squinch clearance has on these motors. It is very important on gassers because it helps prevent detonation. Its one of the reasons most gassers have valve clearances machined into the top of the pistons. I don't think that it is going to cause you any piston bowl problems. Let us know how it runs.
Horace
Horace
06-04-2005, 10:21 AM
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Horace,
I'm very excited as well.
Detonation isn't that bad on a diesel, compared to a gasser, but it is hard on parts... (My 12v with over 35* had some detonation under 2,000RPM,,
)
I read in alldata that my motor has a 16.5:1 compression. If I have -.010 on the head, +.020 on the gasket, and -.020 on the pistons, what would the C/R be now?
I'm hoping with the Mach 4.8's, and Mad ECM, I'll be able to keep the boost low enough to not blow out a headgasket with head studs only, and no o-rings... Think I could do that? (35/14-3B/26)
Merrick
I'm very excited as well.
Detonation isn't that bad on a diesel, compared to a gasser, but it is hard on parts... (My 12v with over 35* had some detonation under 2,000RPM,,
)I read in alldata that my motor has a 16.5:1 compression. If I have -.010 on the head, +.020 on the gasket, and -.020 on the pistons, what would the C/R be now?
I'm hoping with the Mach 4.8's, and Mad ECM, I'll be able to keep the boost low enough to not blow out a headgasket with head studs only, and no o-rings... Think I could do that? (35/14-3B/26)
Merrick
06-05-2005, 10:43 PM
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Are you guys shooting from the hip??your static C/R not much to do with running dynamic C/R......20 th will hardly do nothing,and if valve clearance is what you want ( I cant imagine you need that much kift with boosted eng.) I suggest a diff turbo set up rather then that high lift.
Gassers need that much lift and duration to get the flow going at high rpm,,,much much high then you CTD will ever see.
Gassers need that much lift and duration to get the flow going at high rpm,,,much much high then you CTD will ever see.
06-06-2005, 12:35 PM
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It's a PDR cam, but I think my valve springs couldn't handle as much boost as I was running.
My main goal was to not have to tear the motor down again anytime within the next couple of years.
Dropped C/R, lower EGT's, valve clearances. I don't really care that much, just as long as I don't crack the block, and don't bend a valve.
Merrick
My main goal was to not have to tear the motor down again anytime within the next couple of years.
Dropped C/R, lower EGT's, valve clearances. I don't really care that much, just as long as I don't crack the block, and don't bend a valve.
Merrick
06-08-2005, 07:24 PM
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Yup.
No problem.
Shut down solenoid diagnostics, and custom "keys",, no problem.
Idle issues? Not there yet, LOL.
I don't THINK that I will make it, but I'll give it a shot.
Merrick
No problem.
Shut down solenoid diagnostics, and custom "keys",, no problem.
Idle issues? Not there yet, LOL.
I don't THINK that I will make it, but I'll give it a shot.
Merrick