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6-bolt & 7-bolt short blocks

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dsm-junkie

10+ Year Contributor
277
1
Jan 20, 2012
miami, Florida
Hey guys! I'm searching but can't really find what I need! I will be running a 6 bolt short block with a 2g head. Before my short block arrives I wanna know if some parts (not timing parts) from my 7 bolt short block on my 6 bolt short block such as power steering bracket and pump, ac bracket with ac compressor, and oil filter housing? Or will I need to get the 6 bolt version of these parts? Thanks!
 
All the accessories will bolt on to the 6 bolt block. The oil filter housing will not. You will need the 6 bolt housing. You will also need to trim the motor mount bracket that bolts to the block on the driver side and get a 6 bolt tensioner arm, tensioner and water pump.
 
Hey guys! Does anyone have anyone useful tips to remove rust from the outside parts of the block! I have rust on the front and rear sides! I want to paint my block but I want the best finish. Rust will just kill my paint job!
 
It's an engine block, power wash the outside with some purple power use some etching primer and paint it. It will likely flake off anyway.
 
Sorry guys should of clarified it a little! My short block is fully assembled! I just want to get the surface good enough to paint it! I need the cleanest/most effective way to get it all squared away! What do you guys think about aircraft remover?? Used in a concealed way! I know it eats up rust pretty good!
 
Aircraft stripper doesn't remove rust, it removes paint. Naval jelly will work as well as different acids.
 
Heres a couple pictures showing you guys what I'm dealing with. There a little far away, but ill try to get better pictures next time i'm working on the block.


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Cover the HG surface with a few layers of tape, masking or duct tape.

Get a 1" wire cup brush on a drill or die grinder and a pair of safety glasses and have at it
 
Cover the HG surface with a few layers of tape, masking or duct tape.

Get a 1" wire cup brush on a drill or die grinder and a pair of safety glasses and have at it

Thanks alot!! I guess thats the route I'm gonna have to take!

Does anyone have any tips as to cleaning the block assembly prior to installation? Im not looking to disassemble the internals. Just want to clean things up a bit before putting the head back on!
 

Thanks a lot! Well guys I found out that my short block is also the non turbo 4g63! :bang head: I see no oil squirters. I am running ross racing forged pistons with eagle rods and arp studs! Since I will be running forged internals I shouldn't have to worry much about not having oil squirters right?
 
Alright guys I'm getting ready to get my 2g head stud holes to be drilled out for the 6 bolt short block. I have been reading that they only need to be drilled out 1mm larger to make the holes 13mm. I also read that they should be drilled out to 13.7mm or 0,539". Which size is the correct size? Thanks!
 
Alright guys I'm getting ready to get my 2g head stud holes to be drilled out for the 6 bolt short block. I have been reading that they only need to be drilled out 1mm larger to make the holes 13mm. I also read that they should be drilled out to 13.7mm or 0,539". Which size is the correct size? Thanks!

Go read the link in post #3
 
Go read the link in post #3

That thread is a little confusing. It says to ream out the oil supply hole for the head to .500 but I seen that the 1g head bolt holes were between .503 and .510. So that would make the oil supply hole smaller than all of the other stud holes?
 
The factory drilled holes I measures were between .503-.510.... Just ream them .500 and also do oil port mod one and you will be fine
 
The factory drilled holes I measures were between .503-.510.... Just ream them .500 and also do oil port mod one and you will be fine

Alright I found another thread basically saying that the stock 2g heads stud holes are 11mm and they need to be drilled out to 12mm to accomodate for the 1g head studs. So this would mean in order to do the oil port mod #2 I would need to drill out the oil supply hole to 12.7mm (.500) only .250 from the surface correct?
 
NO!

ALL the head bolt holes have to go .500

If not, due to machining tolerances, the 12mm head studs, will snug fit the 12mm holes in the head.

The head will not "slip" over the studs as needed.

The alignment dowels are there to be a snug fit for the block HG and head.
 
NO!

ALL the head bolt holes have to go .500

If not, due to machining tolerances, the 12mm head studs, will snug fit the 12mm holes in the head.

The head will not "slip" over the studs as needed.

The alignment dowels are there to be a snug fit for the block HG and head.


So the holes have to be no bigger than .510? but no less than .500? The oil feed hole has to be .500 though??
 
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