The Superspec is close to life once again..
After a leaky head gasket caused some pitting/rust in 2 of the cylinder bores last year.. the engine had to be torn down for a bore/hone job and new slugs.. The pitting was too deep to reuse the pistons, because the skirt clearance would have been something in the neighborhood of 7 thousanths.. way too big for a 700whp motor.. Oh.. which leads me to the next big update.
We have replaced the SC61 turbocharged with a much larger PT67-P-trim ball bearing center section.. stuffed into T3/T04E housings. We have also lightened up the valvetrain by using VQ35 lifter buckets.. This dramatic drop in weight, will allow us to spin this thing up to 9500rpm without any valve float.. We are still on STOCK valves and retainers.. with a single valve spring configuration. Pretty amazing.. We are guessing that we will hit the 650-700whp mark at roughly 25-28psi of boost with the new turbo and higher rev range.
Anyway.. here's a few pics..
SR crank, nestled in the QR block.. This is how it SHOULD have been from the factory!
Sleeved block with big bore.. Custom Cunningham lightweight chromeoly connecting rods with 22,000psi bolts.. Custom CP 8.8:1 forged pistons with lateral gas ports and forced pin oilers.
ACL Race bearings.. These should stand up to 10K rpm without any problems..
Lateral gas ports shown (circled). This allows exhaust gas to get behind the ring, and exert more pressure against the back of the ring. This makes for a better ring seal under high RPM, where you would usually see ring flutter.
1 and 2 in.. 3 and 4 will have to wait until tomorrow..
This car will be absolutely insane... I thought it was fast at 430whp.. I can't imagine another 200-250whp.. Keep in mind.. this car made 500whp at 19psi at a conservative 8500rpm! For those who haven't seen the car in action.. this is a SR20 crankshaft, cut to fit into a QR block, with custom 6" rods, and 8.8:1 pistons.. custom cams, intake manifold, etc.. etc..
19psi, VERY conservative tune, and lots of cam timing work left to do..
this is my other car. i picked up a fox so that i didnt have to drive this monster everyday.
After a leaky head gasket caused some pitting/rust in 2 of the cylinder bores last year.. the engine had to be torn down for a bore/hone job and new slugs.. The pitting was too deep to reuse the pistons, because the skirt clearance would have been something in the neighborhood of 7 thousanths.. way too big for a 700whp motor.. Oh.. which leads me to the next big update.
We have replaced the SC61 turbocharged with a much larger PT67-P-trim ball bearing center section.. stuffed into T3/T04E housings. We have also lightened up the valvetrain by using VQ35 lifter buckets.. This dramatic drop in weight, will allow us to spin this thing up to 9500rpm without any valve float.. We are still on STOCK valves and retainers.. with a single valve spring configuration. Pretty amazing.. We are guessing that we will hit the 650-700whp mark at roughly 25-28psi of boost with the new turbo and higher rev range.Anyway.. here's a few pics..
SR crank, nestled in the QR block.. This is how it SHOULD have been from the factory!
Sleeved block with big bore.. Custom Cunningham lightweight chromeoly connecting rods with 22,000psi bolts.. Custom CP 8.8:1 forged pistons with lateral gas ports and forced pin oilers.
ACL Race bearings.. These should stand up to 10K rpm without any problems..
Lateral gas ports shown (circled). This allows exhaust gas to get behind the ring, and exert more pressure against the back of the ring. This makes for a better ring seal under high RPM, where you would usually see ring flutter.
1 and 2 in.. 3 and 4 will have to wait until tomorrow..
This car will be absolutely insane... I thought it was fast at 430whp.. I can't imagine another 200-250whp.. Keep in mind.. this car made 500whp at 19psi at a conservative 8500rpm! For those who haven't seen the car in action.. this is a SR20 crankshaft, cut to fit into a QR block, with custom 6" rods, and 8.8:1 pistons.. custom cams, intake manifold, etc.. etc..
19psi, VERY conservative tune, and lots of cam timing work left to do..
this is my other car. i picked up a fox so that i didnt have to drive this monster everyday.
Did you look at the engine build pics and the part specifications he listed? The engine block is worthy of insane HP+ and I am sure he will be laying down a near single digit 1/4 mile bracket time by the end of this build.
Thanks for chiming back in Yello!!!! I appreciate it.
