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Block differences
What is the main difference in the 109 turbo blocks and na blocks. I know there is a oil return feed. Are the blocks more stout? If im not planning on making alot of power would I be ok to build a NA engine up? I can get a rolled fillet crank, 2 dot rods, and 8445 heads for a good price.Im going to turbo it also. What do you guys think?
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Re: Block differences
http://www.gnttype.org/techarea/pict...lockguide.html
Check out the metallurgy and such. Other than the drain hole there are no differences. |
Re: Block differences
So the other difference inl the turbo blocks have more metals in them? Like it says Manganese (maybe), and some Chromium (maybe), so really there not even certain.
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Re: Block differences
No ... they are identical. Read a bit closer ...
The STAGE blocks have different metallurgy (reportedly) ... production blocks have the same metallurgy. Any 109 block will be the same (turbo or not) |
Re: Block differences
oh, ive been confused on that for awhile.What about the pre 86-87 NA blocks, what is the difference between them and the 109 blocks? I couldn't find anything in the tech area about them, but i could have missed it.
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Re: Block differences
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Re: Block differences
I just found a NA 86 doner car to use the 109 block for my 84 ha. I know that the heads are the same, but my concern is the deck height being slightly different. I want to use the stock 84 intake to maintain the HA configuration & look
Any problem here? |
Re: Block differences
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Re: Block differences
Have your machinist measure it ... if it came out of a N/A car, the deck height may be the same as the '84.
In either case, it's such a small amount, that everything should bolt up fine either way. |
Re: Block differences
The deck height is the same for all 109 blocks. Even the NA motors used a thick graphite HG to compensate for the shorter deck.
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