JFreeman

I'm about to install my pistons and noticed the "pocket" (not sure of the correct term) is a bit different from my stock pistons. These pistons are 100.5mm just to make up for machining the block. Other than that supposed to be stock. Should I be concerned? Also another quick question. When installing head studs, are you supposed to put some kind of thread locker on them or not? I have gotten mixed advice about this.

gpr8er

didn't know that Wiseco made Alusil compatible pistons?

blown 944

I would be concerned. It doesn't look like the dish design is wide enough to accommodate the valve reliefs. You would be best to clay it with the head and cam tower on to see what kind of clearance you have.

I have not used thread locker in aluminum ever. I'd be more inclined to use anti sieze if anything.

JFreeman

The block has steel sleeves. Thinking the clay might be a good idea before i bolt it all together.

gpr8er

Raceware states no threadlocker. Use only teflon pipe sealant, ie. Permetex.





Permatex® High Temperature Thread Sealant

OEM specified. Locks and seals threaded fittings. Resists leakage, vibration loosening, moisture, hydraulic fluids and diesel fuels. Lubricates threads for easy assembly and disassembly. Won’t shred or wear like thread seal tape. Parts may be repositioned up to 4 hours after application. Temperature range from -65°F to 400°F (-54°C to 204°C). Contains PTFE.

Suggested Applications: Head bolts into through holes, oil PSI sending units and sensors, oil and coolant lines, fuel fittings, rear axle fill plug, brake and power steering fittings

333pg333

Looking at your stock pistons you suffered some clash anyway.

JFreeman

PO might have lost a timing belt at one time. I never did. So has anyone ever used Wiseco before?

MooreBoost

I have wiseco pistons and darton steel sleeves

kev951

well, the pocket also is equated to the compression ratio. so if the volume is different, so is your compression. stock studs , just use oil on the nuts, and make sure the stud holes are all clean and clear, no threadlocker needed. just set to the proper height, and while properly torquing the head, the studs will bite.

MooreBoost

jfreeman here is my setup.

Question for the pros. Are these wet or dry sleeves?

fortysixandtwo

^ Wet.