Originally Posted by ashtonsser
Yeah its definetly not the headgasket thats the issue, That mazworx headgasket is beautiful, the next best would be the cosworth, another very very nice multilayer gasket. But that full grommet design is second to none. There is definetly a problem with the sleeves.
My buddy talked to the machine shop and the guy was more than willing to work with him and reimburss the money for the parts and labor if it is a fault with his work. He already stated he was kinda skeptical once he actually started working on it and seeing how difficult it really is on these blocks. There is alot of precision involved in alot of areas. So he told us to take the head off and he was gonna swing by and take a look to see if the sleeves did slide down from mis installation. If so the block is no good and neither are the sleeves. So thats where we sit soo far.
We are going to order a DE motor for now and throw all the parts minus pistons and rods onto it, So ve head onto de block 2.0L, ve front cover and oil pump, pullies and we will use the Cosworth headgasket for now until we get another 90mm sleeved block done. So Thats where it sits. Hopefully once he sees the sleeves are obviously wack he'll just pay up. That will make everything smoother. Again they are insured through Napa so i dont see why it would be a big deal to just take blame under obvious evidence.
Neways i agree with the torquing as well although both the cosworth, cometic, and mazworx gasket say to just follow fsm torquing procedures. No more no less no extra. So thats what i did. And even the retorque that we did which the machine shop recommended to try as well after we already did was a good idea but again it was a no go and didnt make a difference on it at all. Still acted exactly the same. But it will be back again. But probably bigger and better. I think we are going to go with a 91mm stroker crank as well and have mazworx do the sleeves and blockwork for the crank. No more playing games. Its not that we tried to cut corners because the cost was the same had we sent it off to them to begin with. It was just what it was stated.
Yeah its definetly not the headgasket thats the issue, That mazworx headgasket is beautiful, the next best would be the cosworth, another very very nice multilayer gasket. But that full grommet design is second to none. There is definetly a problem with the sleeves.
My buddy talked to the machine shop and the guy was more than willing to work with him and reimburss the money for the parts and labor if it is a fault with his work. He already stated he was kinda skeptical once he actually started working on it and seeing how difficult it really is on these blocks. There is alot of precision involved in alot of areas. So he told us to take the head off and he was gonna swing by and take a look to see if the sleeves did slide down from mis installation. If so the block is no good and neither are the sleeves. So thats where we sit soo far.
We are going to order a DE motor for now and throw all the parts minus pistons and rods onto it, So ve head onto de block 2.0L, ve front cover and oil pump, pullies and we will use the Cosworth headgasket for now until we get another 90mm sleeved block done. So Thats where it sits. Hopefully once he sees the sleeves are obviously wack he'll just pay up. That will make everything smoother. Again they are insured through Napa so i dont see why it would be a big deal to just take blame under obvious evidence.
Neways i agree with the torquing as well although both the cosworth, cometic, and mazworx gasket say to just follow fsm torquing procedures. No more no less no extra. So thats what i did. And even the retorque that we did which the machine shop recommended to try as well after we already did was a good idea but again it was a no go and didnt make a difference on it at all. Still acted exactly the same. But it will be back again. But probably bigger and better. I think we are going to go with a 91mm stroker crank as well and have mazworx do the sleeves and blockwork for the crank. No more playing games. Its not that we tried to cut corners because the cost was the same had we sent it off to them to begin with. It was just what it was stated.
Ashtonser, after building 40-50 Built SR motors ( maybe more) over the years, there are a few things that I have learned to stick with on what the factory manual says for specs, and others that I have learned to "modify" and "adjust" and others i've learned to ignore. The head TQ specs i listed will work better, hold more power, keep non factory headgaskets from leaking, and just plain last longer.
If the machinist did not use a TQ plate to bore the sleeves after installation then the sleeves can lift up higher than the deck surface while boring, and when the block is decked ( assuming it was decked) the sleeves are not bottomed out in the bores. So when the engine is assembled and running the sleeves are "loose" in the block and are not sealed FIRMLY against the head gasket.
If the sleeves are tapered fit into the block then it may be salvageable. They could be pressed back into the block, the block could then be milled just enough to create a flush surface on the deck as needed. But this depends on how the block was machined as such.
I would also recommend going to 91-92mm bore next time. The Mazworx gasket can support that large of a bore. Its the same cost as a 90mm, but you get extra displacement for free. Specing out the pistons for another $250-350 and take some weight off of them and get some of the better "goodies". There is cheap HP built into piston design, Most people use shelf pistons or just stock but larger bore.
Either way, good luck with the motor, hope it works out. Keep us informed.
-Ted