In need of the torque specs on the main bolts for an EVO 8
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In need of the torque specs on the main bolts for an EVO 8
Hi - i'm currently rebuilding an '03 EVO 8 motor and was unable to find a set of ARP main studs in time to finish up the motor. I will reuse the OEM Main bolts and I need the torque specs if anyone has the dealer manual. Thanks for your help. Trini!
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Hope this helps, this is the info from the factory cd manual I have . . . it doesn't really say what the first number is (nm, etc.) but the numbers in () are in ft/lbs.
Good luck
Good luck
Crankshaft and cylinder block
Beam bearing cap bolt 25
± 2 (18 ± 1 ft-lb) + 90°
Bell housing cover bolt 9.0
± 1.0 (80 ± 8 in-lb)
Check valve 32
± 2 (24 ± 1 ft-lb)
Flywheel bolt 132
± 5 (98 ± 3 ft-lb)
Oil seal case bolt 11
± 1 (98 ± 8 in-lb)
Rear plate bolt 11
± 1 (98 ± 8 in-lb)
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Thanks 96_LXR for the info, unfortunately it does not list the Main bolt tq spec. If anyone esle has the info please post it. Thanks again 96!
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I not sure if i'm listing it right, the Main bolts are the ones on the Main Crankshaft Cap. It locks down the crankshaft from the bottom, if the oil pan was removed you will see them.
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Originally Posted by DocMortal
8 4 1 5 9
7 3 2 6 10
thats the sequence
10 bolts holding the crankshaft to block
25+-2 N:m (18-+1ft-lb)
I think those are what your talking about...
7 3 2 6 10
thats the sequence
10 bolts holding the crankshaft to block
25+-2 N:m (18-+1ft-lb)
I think those are what your talking about...
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#9
Shooting for 700 hp? Not with the main caps tightened to 18 ft/lbs. you aren't. But if you do, just watch your feet. You torque the OEM bolts to 18 lb/ft and then go 90 degrees torque angle from there. On the other hand, if I were building a motor that I expected that kind of power from, I would be runnin a better fastener than the stock bolt. I would get the ARPs, I think in the long run you will find that they are worth the wait.
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Originally Posted by darkhorse
Shooting for 700 hp? Not with the main caps tightened to 18 ft/lbs. you aren't. But if you do, just watch your feet. You torque the OEM bolts to 18 lb/ft and then go 90 degrees torque angle from there. On the other hand, if I were building a motor that I expected that kind of power from, I would be runnin a better fastener than the stock bolt. I would get the ARPs, I think in the long run you will find that they are worth the wait.
#11
ARP does make a kit for the mains, as well as the heads for the 4G63. Its worth the investment. Get a set, run a tap down the holes to clean up the threads and install them properly. If you are going to be pushing some real loads on the motor, you want at least a good fastener to hold the girdle assembly on.
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Originally Posted by darkhorse
ARP does make a kit for the mains, as well as the heads for the 4G63. Its worth the investment. Get a set, run a tap down the holes to clean up the threads and install them properly. If you are going to be pushing some real loads on the motor, you want at least a good fastener to hold the girdle assembly on.
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