Engine builders and tuners ???????
We have just rebuilt a motor that may have had the problem before we started. It is a GSR motor with pistons and rods sleeved, head is stock port with bigger valves 1mm both intake and exhaust, and stiffer valve springs and stock cams. We have compression tested, leak down tested motor. Have check oil pressure and all points on the motor. It also has S300 that is already tuned.
The problem is that no matter where VTEC is set is breaks up real bad-like a machine gun is shooting. If you stay in it, it will pull through it and make good power. The A/F are good, we have replaced all ignition components -MSD box, coil, dist., wires, plugs. Tore down top half of motor and inspected rockers, shafts, solenoid, cams and springs- found nothing.
Any insight on something or thoughts would be appreciated we have been several days on trying to figure the problem. Thanks
The problem is that no matter where VTEC is set is breaks up real bad-like a machine gun is shooting. If you stay in it, it will pull through it and make good power. The A/F are good, we have replaced all ignition components -MSD box, coil, dist., wires, plugs. Tore down top half of motor and inspected rockers, shafts, solenoid, cams and springs- found nothing.
Any insight on something or thoughts would be appreciated we have been several days on trying to figure the problem. Thanks
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