4.020" bore?

Reply Subscribe

Thread Tools

Search this Thread

Oct 4, 2009 | 06:16 PM

stevied916

Thread Starter

TECH Enthusiast

iTrader: (30)

Joined: Jul 2007

Posts: 546

Likes: 1

From: Sacramento, CA

4.020" bore?

So I acquired a used lq4 block. I deglazed/honed the cylinders with a home hone tool. Measured the bore and it's 4.020". The block must have been previously bored to 20 over before I got it. I was wondering if I should try to go 10 over more with the tool or just take it to the shop to get it to 30 over? I don't want to spend $250 to get it to 30 over and don't wan't to order custom pistons either because this is a budget build. Anyone ever had to deal with this?

Oct 4, 2009 | 08:08 PM

sbmalibu

Staging Lane

Joined: Jul 2008

Posts: 73

Likes: 0

From: north judson indiana

You have almost no chance of getting a good straight .010 hone job done.You will be way ahead having it bored and honed by a machine shop then trying this and ruining your block.

Oct 4, 2009 | 08:13 PM

sbmalibu

Staging Lane

Joined: Jul 2008

Posts: 73

Likes: 0

From: north judson indiana

Or try diamond pistons if the bores are good customs might not be so much more than off the shelf .030 pistons if you figure in the price of machine work.You basically have $250.00 extra for customs if you dont have to spend it on machine work.Just a thought.

Oct 4, 2009 | 09:35 PM

novaflash2002

TECH Enthusiast

iTrader: (51)

Joined: Jul 2008

Posts: 616

Likes: 0

From: Billings, Mt

Quote:

Originally Posted by sbmalibu

You have almost no chance of getting a good straight .010 hone job done.You will be way ahead having it bored and honed by a machine shop then trying this and ruining your block.

you can have it honed .010. when i bore i leave .007 to hone out so i can center my bore eaiser. i usually just hone even .020 depending on cylender taper. if you have a locking hone you can do it yourself. do not try it with a ball hone (they are just a glaze breaker).

Oct 5, 2009 | 04:11 PM

stevied916

Thread Starter

TECH Enthusiast

iTrader: (30)

Joined: Jul 2007

Posts: 546

Likes: 1

From: Sacramento, CA

found a local shop that will hone it with plate for 120...I'm just going to do that

Oct 5, 2009 | 04:58 PM

novaflash2002

TECH Enthusiast

iTrader: (51)

Joined: Jul 2008

Posts: 616

Likes: 0

From: Billings, Mt

i have found with the 99-04 blocks its almost pointless to torque plate hone them. the threads are all the way at the bottom of the cylender lol.

Oct 5, 2009 | 05:34 PM

NemeSS

TECH Senior Member

iTrader: (127)

Joined: Sep 2005

Posts: 6,889

Likes: 9

From: Houston,TX

Quote:

Originally Posted by stevied916

found a local shop that will hone it with plate for 120...I'm just going to do that

thts a fair price for a .010 hone.
might as well take to .030 and use overbore new pistons.

Trending Topics

2000 Z28 MarxXster

11

237
LS6/Cathedral to LS3/Square Swap Results

39

2k
Pushrod preload on ls7 lifters

15

527
New engine

6

253
Why are my fans on constantly? Holley EFI

6

186

Oct 5, 2009 | 07:20 PM

stevied916

Thread Starter

TECH Enthusiast

iTrader: (30)

Joined: Jul 2007

Posts: 546

Likes: 1

From: Sacramento, CA

Quote:

Originally Posted by novaflash2002

i have found with the 99-04 blocks its almost pointless to torque plate hone them. the threads are all the way at the bottom of the cylender lol.

I don't know if I would want to hone 10 over without a plate. They sais something like 60 or 70 for hone and 155 with torque plate. A different shop said 120 with plate. Think it would be a good idea to line hone since I'm using studs now? The shop also said that it would be a good idea to check the rods for $65 and it would be another 25 if they needed to be machined