Robert AMG

iTrader: (1)

Where to get a good price for Arp studs, need 16 for my m112, start to lift heads. Who sells them other then Weistec?
Thanks

Ajbolton81

Look for crossfire kits online much cheaper

e55amgrocket

If they are the same as the m113 I can find the part number and you can order directly from ARP.

Robert AMG

iTrader: (1)

yes same as 113, need part nb please, what the price directly from arp?
thanks.

Robert AMG

iTrader: (1)

i have another question, if i lift heads, then after i want to change the bolts, can i change one by one without taking out the heads or need to change also head gaskets?

Ajbolton81

Change head gaskets and I would check the block and head for warpage. I run a 55 113k motor with a lot of boost and never lift heads

Ajbolton81

I've been a Benz dealer tech for 12 years. My guess is you have a head issue. Those blocks are pretty bullet proof. Usually blocks let go from ****ty tunes and running lean

Robert AMG

iTrader: (1)

afr between 10.5 and 11, head gaskets are new when i installed wiesco pistons, i was runing fine but when i switch to a more aggressive timing tune i got this issue, btw i am running 28-29 psi boost, stock compression 9 to 1, stock c32 block and heads.

Ajbolton81

You deffinetly want to check the deck of the block and you really should check the heads. Do new gaskets and if you don't mind me asking who did your tune?

Robert AMG

iTrader: (1)

bro it's not a matter of who did the tune, this is a custom tune, the pressure inside the chamber got higher plus high boost and when going wot the coolant it under pressure and coolant falling out the reservoir, only when full throttle high run, same as all guys here with m113k and weistec they have lifted heads.
i found the part nb of the arp studs, i'll call them.
thanks.

Ajbolton81

A lot of it has to do with the tune. None of this happen till you went with the avgressive tune. That's why I'm hoping u didn't do any damage to the block or heads. Im well aware a lot of people lift their heads under high boost applications. The thing that I don't under stand is the map sensor can only handle 24 psi of boost and you claim to be higher than that. Also it sounds like you only did Pistons and didn't sleeve the block. So I would hate to see you punch a whole or melt a cly wall down after you fix the issue. Just trying to help. Also I have seen plenty of them run at 20lbs of boost with stock head bolts that have never lifted.

Ajbolton81

Another issue I have also seen that causes this is guys don't have correct ring gaps on the piston for all that boost.

Robert AMG

iTrader: (1)

thank for help, i'll see what to do basically switch to normal tune, arp bolts and head gaskets,
running with 2 bar map sensor with map voltage regulator.

Ajbolton81

U can go with a custom tune. Just found a lot of high end places even like Kleeman, wiestec and other major companies tunes are junk. There are a lot of shops by me that offer quality tunes done on the dyno and are set up for your personal applications. But if the block and heads are ok. I can find out what the ring gap should be for your application. I know a lot of issues with rings causing this concern.