worth keeping a 7 bolt?

Andrew7dg · 01-20-2009

I have a 7 bolt N/A block and I am wondering if it is worth keeping around or if I should get rid of it.

I know the early 2g 7 bolts have crank walk problems but I don't know if the 1g blocks did.

Plus it is N/A so no oil squirters

There are a lot of 7 bolt 4g64 cranks at the junk yard. Would it be worth thinking about doing a 2.3 block?

or is this really not even worth my time?

**goodhart** · 01-20-2009

Is this a 4g63 or 4g64 block you're talking about? a 4g64 would be a 2.4 not a 2.3.

**asshanson** · 01-20-2009

I understood that he was going to use a 7 bolt 4g64 crank in a 4g63 block.

Andrew7dg · 01-22-2009

Quote:

Originally Posted by asshanson

I understood that he was going to use a 7 bolt 4g64 crank in a 4g63 block.

correct. the 7 bolt 4g64 blocks are everywhere in the junk yard and I have a 1g 7 bolt 4g63 block out of a n/a block.

Or I could keep it a 2.0L because the cranks are the same from the turbo motors. All I would have to do is change pistons. Actually I have a set of rods and 8.5 pistons out of a 2g motor. Still need the oil squirters though.

I ask this because after reading jacks transmissions i found this on there website

http://www.jackstransmissions.com/st...3893721b961a60

"The only fear people have of the 7-bolt is crank walk. We believe the 7-bolt is a superior engine to the 6 as the 7 has a far stronger crank, better compression ratio, nice strong girdle, helix angle in oil pump (for a quieter engine) and lighter rotating assembly. Buying a 7-bolt from us will eliminate the crank walk problem, so why not go with the better engine."

However I don't know how much difference there is between a 2g 7bolt block and a 1g 7bolt block

Any opinions on this?

**Goat Blower** · 01-22-2009

The 7-bolt crank is not better than the 6-bolt.

Super Bleeder!! · 01-22-2009

Quote:

Originally Posted by Goat Blower

The 7-bolt crank is not better than the 6-bolt.

I remember Artie Effem saying otherwise. I think it had to do with the radius on the crank journal edges.

**Goat Blower** · 01-22-2009

Yeah, but I think they came up with that it's made of a slightly softer material.

MustGoFaster · 01-23-2009

Do you know when you are going to use it? Do you have a plan to use it? If not ditch it, being a pack rat takes up way too much space.

Is it the new style block that has the thrust washers separate from the center main bearing? If it is, it's worth keeping, if it has the 6 bolt style center main bearing, you're just asking for crank walk if you use it.

TkrPerformance · 01-23-2009

I have beat the hell out of the evo III 7bolt for over 30k so far my self before that it was in a rally car. It is just fine 7bolt still even with the twin plate for almost a full year now. The evo III engine does not have squiters in them

brando · 01-23-2009

oil sqirters arent really a necessity. its no lie that 7 bolts can produce numbers easier than 6 bolts. i do belive that it is just because of the pistons though. we will see. my 6 bolt is getting 2g pistons and my buddy is gonna built his 7 bolt so we will seere which one works out better

jrohner · 01-24-2009

Might as well go with the 2.4 block and all.

Andrew7dg · 01-26-2009

Ok I have decided I don't have a car to put the 7 bolt in and it is the old style 7 bolt so it is not worth keeping around. I will be keeping the head and posting that forsale (7bolt 1g head)

Like stated before it is not worth the clutter around the place

and might as well go 2.4L