Drastang

ok I got all my new bolts in strapped it all down guess what.... I got pistons impacting the GDMFSOB crank every piston is hitting and/or scraping the crank when the piston is at compete decompression 1-8.

jwog666

call them up, verify the part numbers are correct, then verify that you assembled it correctly. mmr has a top notch reputation. but mis packaging happens to the best. double check everything.

Z28KLR

You assembled the shortblock yourself? I applaud your effort and bravery in doing so, but for the exact reason that due to inexperience I'd find a way to f**k something up and possibly have to start over is why I would pay the extra money for an assembled short or longblock.

Good luck, hopefully you don't have to tear it all back down again to find what's wrong.

Drastang

I've torn this motor down 4 times past week thats easy, only issue I've had is MMR said everything would fit and be weighted no machining needed. I've had to grind my block in 3 places and now the crank is impacting pistons I maybe have a 1/16 inch of clearance in my whole block between crank/block and pistons in no way is this a simple drop in kit. I'm on my 5th disassemble as we speak thank god I bought all reusable bolts.

Drastang

well so much for piston notching .... they only did one side the smaller port still hit the piston and have made their own notches and now I have a whole head froze cam wont turn.....

oxfordgt

I have built quite a few short blocks with MMR kits and never had a problem. Are you sure everything is is facing the correct way? Are you sure you told MMR the correct block you have.

Drastang

told them 02 romeo gt , doesn't really matter atm now that I have a cam that wont move even with rollers taken out, now I will have to take my passenger head to someone and with my income that will just never happen so I guess I'm done.

Sandmanbjj

Clearly something is not correct. Just seems like if I bought a "kit" and something didn't fit right i would have stopped and called the maker of the kit before I just started grinding stuff.
I'm not saying MMR didn't make an error but I wouldn't think their kit would need the amount of grinding you posted about.
What has MMR said about all of this?

Drastang

I did contact them about the block grinding they said it was a known romeo issue.

at this point I can only guess I had my timing off some how on my passenger head and not my driver... even though all my marks lined up. even then I should still not have impact issues if my pistons where to be notched right? my head is ruined on my passenger side the cam struggles to rotate even with the cam caps off.

when i seated the passenger cam caps it simply bent them due to the lifter impacting piston*

i even went back and rotated each piston to opposite cylinder to make sure i didn't have the pistons on wrong banks... had it right first time.

oxfordgt

If you were turning it by hand there is no way you could have damaged the head. Did you put the cam caps back exactly where they came off? Did you put the cams in the correct heads?