is there any difference in 92 4g63 block & 98

[2G@wD]

Is there any difference between a 92 4g63 block and a 98... I have 92 block with my 98 head setup in my 98 gsx just wondering if there was any pro/con with it... It was formed mostly out convince.. Any opinions??

 

[Vegas Smith]

A 92 block is a 1g 6-bolt and 98 will be a 2g 7-bolt block. I won't list differences as there hundreds of threads on that already.

 

[Teezy]

http://lmgtfy.com/?q=Dsm+7+vs+6+bolt+block

 

[juiced_gst]

1989-1994 is 6 bolt and I think some change after august of 1992 ( that's what I was asked when I ordered new pistons) and 1995-1999 is 7 bolt. 6/7 bolt meaning number of bolts that the crankshaft has. 6 bolt has different style main bearings than the 7 bolt, the 7 bolt uses thrust washers/bearings.

 

[2G@wD]

I know to each his own, anyone care to tell which block they prefer and why... I hear ppl say 6bolt is better...

 

[91talonts1]

They only made 6 bolts halfway through 92. After that they used the 7 bolt bottom end.

The main reason the 6 bolt was considered superior was the thrust bearing problems the early 7 bolts had. The 6 bolt also has larger head studs and larger rod mains.

 

[Brando_DSM]

you're asking an opinionated question. people can tell you great things and negative things of each engine all day long, it boils down to preference in what you want to run

 

[DeathJunior]

As a general consensus after hunting for a long while seems the 6 bolt wins out in most groups since it tends so suffer crank walk less. Though the 7 bolts cylinder head is a superior design.

 

[1990TSIAWDTALON]

Thats the combo I run.

 

[Biddy420]

You will need to get the head bolt holes on the 7 bolt head bored to 12mm instead of 11mm and u will also need to use a 1g cas or install a crank trigger sensor

 

[DeathJunior]

This is true and of course you'll need 1g head bolts or studs

 

[Biddy420]

6 bolt rods are much beefier I'm in the middle of building a 6 bolt bottom end and 7 bolt head combo I only went with the 7 bolt head because I got a steal on a 7bolt Magnus Intake

 

[19gsx91]

Whoa whoa whoa.. slow down guys. there's some misinformation here.

1989-1994 is 6 bolt and I think some change after august of 1992 ( that's what I was asked when I ordered new pistons) and 1995-1999 is 7 bolt. 6/7 bolt meaning number of bolts that the crankshaft has. 6 bolt has different style main bearings than the 7 bolt, the 7 bolt uses thrust washers/bearings.

The "change" was from 6 to 7 bolt midway through 92 as has been previously stated. so if he has a 92 head on the car.. does he have a 92 7 bolt head on a 7bolt block? or does he have a 6bolt head on a 7 bolt block?

The main reason the 6 bolt was considered superior was the thrust bearing problems the early 7 bolts had. The 6 bolt also has larger head studs and larger rod mains.

The 6 bolt is superior for a lot more reasons than that. what other engine can you name that can hold triple-quadruple stock power levels without having to touch the bottom end at all?

Could you imagine throwing some head studs on a b16 and throwing 30psi at it? what about an ej25? same thing holds true for a 7bolt 4g63 (albeit the 7bolr can hold around 450whp vs the other 2 which are joke in that of itself). while it's true that the 98-99 split thrust block is superior to the earlier 7bolts... it still wouldn't be able to hold a candle to a 6 bolt in terms of being able to hold power in stock form.

Tear the block apart and rebuild it? Now it's a moot point. Build it for whatever you want. I can't help but laugh at the guys that post "built" 6 bolt blocks on the classifieds saying it should hold 500whp no problem.. The stock block could've done that, it's been proven time and time again.