Not good to hear Ben...but I guess you can pick what you do to it now
Well i finally got the cam out, on the upside the cam isnt to bad but some small scores. On the down side it looks like the cam bearings are shagged, so looks like the engine is coming out completely!
Cheers
Ben
It's Black , its waiting to pounce , the beast !! Soon to Awake
Not good to hear Ben...but I guess you can pick what you do to it now
Yeah isnt ideal but am gonna pull the engine out and door all the bearing and clean everything else up!
It's Black , its waiting to pounce , the beast !! Soon to Awake
Those cam bearings are quite shagged. I've got an LS3 apart in the workshop at the moment that aren't half as bad as that.
576 rwkw turbo m6 - 10.80 @ 136 mph
My estimate at 70 with stock pistons is a comp of about 12:1, what are you chasing?
Remember the GTS is lower compression than a standard LS1, think from memory their 9.8 or 9.9:1. We had figured it would give around the 11.2:1 compression with 70 thou off the heads.
It's Black , its waiting to pounce , the beast !! Soon to Awake
Ok so for all the experts who think that 70 thou off a 241 head is crazy talk here is some data to show why its hardly a big deal.
Stock LS1
66cc chamber 10.15:1 comp
Stock C4B head
I didn't know the chamber vol of the C4B head so I worked my way backwards based off a 9.95:1 SCR getting a 68.4cc chamber
So based on that info when I speced this build I was aiming for mid 11's for the SCR so taking into consideration it takes .007" off a head to drop 1cc (.005 if its off the block which i think might be why people are freaking out) I wanted to drop it 10cc. Hence 70thou. Its also going to be using LS2 gaskets which are a 4.020 bore which takes a little bit away ~.08:1 difference
The end result should be around about this. which is no big stretch what so ever. If anything I'd like to go more, but lets not push the friendship with the heads to much.
Yes I was a little overzealous in my calculation, the dynamic figure will be lower than static comp
Well the motor has been dropped off to get some meat taken off the heads and new bearings installed throughout the engine. Then the go fast parts will be installed and bring her back to life.
Cant wait to have it back on the road have been missing driving it!
It's Black , its waiting to pounce , the beast !! Soon to Awake
Hurry up already
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