Vortec Bandit

I run all Volvo Penta accessories including the oil cooler on my race 496. Oil temp never gets above 210 degrees and that's laying on it at 5800 rpm.

Keith Atlanta

I have had more problems keeping mine warm enough, never had problems with being too hot.

I upgraded to a 3x12 when I rebuilt. I re-engineered the cooling system and simplified it by removing all the bullchit like the cold weather poppits, the cool fuel and the power steering coolers. I had a 190 oil t-stat that never opened so I took it out. I cruise at 185 and I can break 200/205 it I am running the crap out of it but it air temp needs to be hot with warm water temps and really leaning on it.

Vortec Bandit

That's about right where I'm at. If anyone is interested I'm selling this motor. Was completely freshened up right before Key West. Has about 4 hours on it now. Complete drop in and go less headers. About 630 reliable HP right now on 91. Not enough power for the SVL class.

class6

Can the coils be relocated without problems. Say to the back of the motor?

Vortec Bandit

Yes, they can be clustered on the rear of the motor using the coil brackets from the newer 6 liter la based motor.

Keith Atlanta

Wont the wire lengths cause problems since stock is like, what, 10 inches?

You can template the Raylar relocation plates and locate them down low, out of sight and retain the stock wires/wire lengths.

Rage

Well I am obviously the odd man out. With the previous 625hp at 5300 rpm engine running extended WOT @ 5800 rpm the 700HP rated Hardin Marine thermostatically controlled oil cooler and AN10 lines kept oil temp feed to engine at 190F but crank case oil temp (at filter head) would continue to climb until I chickened out ~270-280F. Previously believed the increasing crank case oil temperature at WOT was caused by insufficient oil flow rate through oil cooler do to bearing clearances. A similar problem was resolved for a Whippled 496 by increasing bearing clearances and adding external adjustable pressure oil pump to compensate for increased oil flow rate to maintain oil pressure. For my present increased HP build I have plans for an additional stand alone crankcase only oil cooler system if oil temp runaway is still a problem. With the 120F coolant thermostat the coolant never exceeds 150F at WOT and usually in the 140's.

Keith Atlanta

What bearing clearances did you have it built with? Just curious...

Rage

I built it and 1-4 mains were 0.0017 to 0.0026, #5 was 0.0031 and rods all 0.0023 based on nominal clearance.
Current build 1-4 mains are 0.0027-0.0030, @5 is 0.0035 and rods are 0.0023-0.0025 based on minimum clearance. Crankcase oil temp was up to 230F after short WOT ECU tuning run last Fall.

Rage

What power does it take to be competitive in the SVL these days. Just curious.