getting head machined, how much resurfacing? - Pirate4x4.Com : 4x4 and Off-Road Forum

4004ever · 11-28-2002, 01:31 PM

How much should I get shaved on the head? 50,000, 80,000? The head has warped and it needs a initial resurface, but while at it, I may as well get more taken off to increase the compression ratio. Any input would be great.

Shaun

ranger · 11-28-2002, 05:29 PM

The machinest will determine how much to shave off to get the head surface true. As a standard practice check your block deck also. Won't do any good bolting down a resurfaced head onto a warped block....

4004ever · 11-28-2002, 05:59 PM

The machine shop has determined that 6-7000 must be removed to true the head. I've been told that the stock head can have 75,000 removed to increase compression. I don't want to remove that much material unless I know it will be ok, and not open up the water jacket holes to much.

Shaun

cruiseroutfit · 11-29-2002, 08:43 AM

I had mine shaved 40k-50k to up the compression a little bit. I can't say I've ever heard of anyone going much higher than that but I'm sure its been done...

11-28-2002, 01:31 PM	#1 (permalink)
4004ever Registered User Join Date: Mar 2002 Member # 10478 Location: Calgary, Alberta, Canada. Posts: 115	getting head machined, how much resurfacing? How much should I get shaved on the head? 50,000, 80,000? The head has warped and it needs a initial resurface, but while at it, I may as well get more taken off to increase the compression ratio. Any input would be great. Shaun __________________ 1997 TJ, 4" stage 2 procomp, 33's, xd9000i.

11-28-2002, 05:59 PM	#3 (permalink)
4004ever Registered User Join Date: Mar 2002 Member # 10478 Location: Calgary, Alberta, Canada. Posts: 115	The machine shop has determined that 6-7000 must be removed to true the head. I've been told that the stock head can have 75,000 removed to increase compression. I don't want to remove that much material unless I know it will be ok, and not open up the water jacket holes to much. Shaun __________________ 1997 TJ, 4" stage 2 procomp, 33's, xd9000i.

11-29-2002, 08:43 AM	#4 (permalink)
cruiseroutfit Zeus of the Sluice Join Date: Sep 2000 Member # 1858 Location: Sandy, Utah, USA Posts: 3,404	I had mine shaved 40k-50k to up the compression a little bit. I can't say I've ever heard of anyone going much higher than that but I'm sure its been done... __________________ Kurt Williams Cruiser Outfitters - YOUR CRUISER PARTS SOURCE! - ARB - OME - Engel - Helton - AdvAdapt ExpeditionUtah.com U4WDA - Member TLCA #10662 Wasatch Cruisers #028 Mountain Yoats Red Rock 4 Wheelers #789 Mojave Underground kurt@cruiseroutfitters.com

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11-28-2002, 05:29 PM	#2 (permalink)
ranger Registered User Join Date: Jul 2000 Member # 1282 Location: Boise, Idaho Posts: 4,819	The machinest will determine how much to shave off to get the head surface true. As a standard practice check your block deck also. Won't do any good bolting down a resurfaced head onto a warped block....