7m head gasket

Awyman18 · 11-11-2011, 01:42 PM

yes, get the head machined...and have them chemical bathe it. But, if u go metal, u will probably need the block machined also. Metal hg requires a very smooth surface. like...brand new type smooth. I ended up going with a ishino composite headgasket and arp studs instead of bolts. studs are alot stronger then bolts, and i didnt get the block machined so yea. how much hp are u planning on running?

Sonyps307 · 11-12-2011, 12:39 PM

The stock oem HG and arp head studs hold up pretty good.

Awyman18 · 11-12-2011, 02:28 PM

Yes they do but u can't reuse any of these lol but....arp head studs are so much better then arp bolts. There overkill which is nice to kno

Sonyps307 · 11-12-2011, 03:34 PM

I was talking about a new one from Toyota or driftmotion.

Awyman18 · 11-12-2011, 04:03 PM

Ishino was the supplier for toyota then, so same hg, but it will be a lot cheaper then one from toyota

cre · 11-13-2011, 01:09 AM

The 7M's head bolts are not TTY. They are reusable (but the age of them is why I recommend replacing them). The fasteners were never the problem.

Pro tip: Toyota's service manuals do specify which fasteners are single use and which are one use only. In the MKIII TSRM it's just an asterisk by the fastener in the exploded diagram with a note at the bottom. A few are noted in the text too.

suprra_boy · 11-20-2011, 07:14 PM

i plan on using a metal head gasket and the arp studs what size gasket should i use

suprra_boy · 11-20-2011, 07:20 PM

Quote:

Originally Posted by Awyman18

yes, get the head machined...and have them chemical bathe it. But, if u go metal, u will probably need the block machined also. Metal hg requires a very smooth surface. like...brand new type smooth. I ended up going with a ishino composite headgasket and arp studs instead of bolts. studs are alot stronger then bolts, and i didnt get the block machined so yea. how much hp are u planning on running?

i really just want to get it running stock but very reliable

Awyman18 · 11-20-2011, 07:44 PM

get ur head checked, make sure nothings warped, and have them clean it like i did. machine the head, if u want take the block in and do the same thing. straight edge the block, if u dont know wat that is, take it to the shop. I ended up just using sand paper on the end of a drill and buffed the block clean, but i caught my hg very early. and arp head studs u torque to 120lb, and arp head bolts are 78lbs...so studs are alot stronger with the torque and design

87hilux7mge · 11-20-2011, 08:01 PM

Quote:

Originally Posted by Awyman18

arp head studs u torque to 120lb, and arp head bolts are 78lbs...so studs are alot stronger with the torque and design

arp head studs are 90ft/lbs, bolts are 75. as per ARP directions.

11-13-2011, 01:09 AM	#6
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	The 7M's head bolts are not TTY. They are reusable (but the age of them is why I recommend replacing them). The fasteners were never the problem. Pro tip: Toyota's service manuals do specify which fasteners are single use and which are one use only. In the MKIII TSRM it's just an asterisk by the fastener in the exploded diagram with a note at the bottom. A few are noted in the text too. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

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11-11-2011, 01:42 PM	#1
Awyman18 3" Exhaust Join Date: Apr 2011 Location: columbus Posts: 151	yes, get the head machined...and have them chemical bathe it. But, if u go metal, u will probably need the block machined also. Metal hg requires a very smooth surface. like...brand new type smooth. I ended up going with a ishino composite headgasket and arp studs instead of bolts. studs are alot stronger then bolts, and i didnt get the block machined so yea. how much hp are u planning on running?

11-12-2011, 12:39 PM	#2
Sonyps307 Lexus & 550's Join Date: May 2010 Location: Baltimore Posts: 526	The stock oem HG and arp head studs hold up pretty good.

11-12-2011, 02:28 PM	#3
Awyman18 3" Exhaust Join Date: Apr 2011 Location: columbus Posts: 151	Yes they do but u can't reuse any of these lol but....arp head studs are so much better then arp bolts. There overkill which is nice to kno

11-12-2011, 03:34 PM	#4
Sonyps307 Lexus & 550's Join Date: May 2010 Location: Baltimore Posts: 526	I was talking about a new one from Toyota or driftmotion.

11-12-2011, 04:03 PM	#5
Awyman18 3" Exhaust Join Date: Apr 2011 Location: columbus Posts: 151	Ishino was the supplier for toyota then, so same hg, but it will be a lot cheaper then one from toyota

11-20-2011, 07:14 PM	#7
suprra_boy Stock Join Date: Oct 2011 Location: new your Posts: 17	i plan on using a metal head gasket and the arp studs what size gasket should i use

11-20-2011, 07:44 PM	#9
Awyman18 3" Exhaust Join Date: Apr 2011 Location: columbus Posts: 151	get ur head checked, make sure nothings warped, and have them clean it like i did. machine the head, if u want take the block in and do the same thing. straight edge the block, if u dont know wat that is, take it to the shop. I ended up just using sand paper on the end of a drill and buffed the block clean, but i caught my hg very early. and arp head studs u torque to 120lb, and arp head bolts are 78lbs...so studs are alot stronger with the torque and design