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Bargain forged rebuild kit
Posted: Fri Dec 06, 2013 2:27 pm
by OLD FART
Posted: Fri Dec 06, 2013 4:31 pm
by thrash
7 bolt stuff though, no?
Posted: Fri Dec 06, 2013 6:26 pm
by Neil
Would the pistons and rods be OK in a Starion Block?
Posted: Sat Dec 07, 2013 5:07 am
by OLD FART
Neil wrote:Would the pistons and rods be OK in a Starion Block?
You would need to contact the seller to determine if they were 6 or 7 bolt parts.
Posted: Sat Dec 07, 2013 9:36 am
by WidebodyWoody
6 or 7 bolt pistons and rods will fit the starion block either way.
Posted: Sat Dec 07, 2013 10:49 am
by Superscan
Neil wrote:Would the pistons and rods be OK in a Starion Block?
Pretty sure the only difference is the gudgeon pin, so it SHOULDN'T be a problem as long as you get both.
Cheers.
Posted: Sat Dec 07, 2013 1:15 pm
by kailo
i was under the impression 7 bolt had different pin diameter and wider on big end as well... however i have seen stuff in the us of them "frankensteining" 6 bolt rods to work with the 7 bolt pistons
Posted: Sat Dec 07, 2013 3:27 pm
by 1320ft
I have seen entire 7-bolt rotating assemblies installed into originally 6-bolt blocks.
Posted: Sat Dec 07, 2013 3:51 pm
by OLD FART
1320ft wrote:I have seen entire 7-bolt rotating assemblies installed into originally 6-bolt blocks.
I knew that the big ends were smaller but unsure if the 6&7 bolt mains were the same and if so no reason why the 7 bolt parts would not fit in the 6
Posted: Sat Dec 07, 2013 7:31 pm
by Neil
OK, so got a reply - its all 7 bolt as we had expected.
Am I right in concluding that you would therefore need crank, pistons and rods - not just rods & pistons?
Then the 7 bolt crank would need a new flywheel etc etc?
Posted: Sat Dec 07, 2013 10:16 pm
by WidebodyWoody
I thought you only needed the rods and pistons as a set... Isn't an upgrade for our 4G63 6 bolt motors, the VR4 pistons? I have never measured everything, dave should know best.
Posted: Sun Dec 08, 2013 8:05 am
by enthuzed
Gudgeon pins are different size between 6 & 7 bolt cranks...22 is the first generation & 21mm is the 7 bolt stuff. That said, I fitted VR4 pistols to the original rods...
Posted: Mon Dec 09, 2013 1:13 pm
by redzone
Been a long time since I've had to look too hard at 7 bolt stuff, but I'm 99% sure the big end bearings are different width & you have to machine the crank on a 6 bolt motor if u want to use 7 bolt rods & pistons. Why would you?