Welcome to the 2GNT Forum!
Home Site Background Info & Specs Mods & Tech Info CAPS Part Reviews Donate 2GNT Stickers
Search Printer-friendly copy 2 Users in Chat
Top 2GNT Technical Performance/Engine topic #91963
View in linear mode

Subject: "Cutting the head bolts?" Previous topic | Next topic
destruckeclipseJul-31-05 08:51 AM
Member since Apr 26th 2004
576 posts,
Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#91963, "Cutting the head bolts?"


          

I was reading a thread a while back when I first started working on my car, and it had a picture showing that some of our cars needed to have the head bolts cut down a few grooves to make it fit, since one of the holes in the block was shorter then the rest. I have searched and can not find it now, and I think I need to do this, as now with fresh gaskets and everything fine, the head gasket area still leaks. Anyone know what I'm talking about? I have everything ready, just not sure how much to cut off. I know you can buy arp's and it will fix it too, but I don't have the money right now for that.


'95 GSX - Big16G ~ Leaks, but atleast it runs.

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

Replies to this topic
RE: Cutting the head bolts?, 96eclipse2nr, Jul-31-05 10:25 AM, #1
RE: Cutting the head bolts?, DJ420a, Jul-31-05 12:31 PM, #2
      RE: Cutting the head bolts?, AdministratorStar Turbo Talon, Jul-31-05 01:04 PM, #3
           RE: Cutting the head bolts?, DJ420a, Jul-31-05 05:04 PM, #4
                RE: Cutting the head bolts?, AdministratorStar Turbo Talon, Jul-31-05 05:05 PM, #5
                     RE: Cutting the head bolts?, RxR_Eclipse, Aug-01-05 03:56 AM, #6
                          RE: Cutting the head bolts?, Blizare, Aug-01-05 09:08 AM, #7
                               RE: Cutting the head bolts?, destruckeclipse, Aug-01-05 05:15 PM, #8
                                    RE: Cutting the head bolts?, Kirby, Aug-02-05 06:13 AM, #9
                                    RE: Cutting the head bolts?, willmayo, Aug-02-05 09:39 AM, #10
                                         RE: Cutting the head bolts?, destruckeclipse, Aug-02-05 09:58 AM, #11
                                              RE: Cutting the head bolts?, scirio, Aug-05-05 05:25 PM, #12
                                                   RE: Cutting the head bolts?, TeamMichael_97RS, Aug-08-05 08:26 AM, #13
                                                        RE: Cutting the head bolts?, destruckeclipse, Aug-10-05 09:40 PM, #14
                                                             RE: Cutting the head bolts?, thedawg, Aug-11-05 07:28 AM, #15

96eclipse2nrJul-31-05 10:25 AM
Donating 2GNT member
3605 posts,
Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#91966, "RE: Cutting the head bolts?"
In response to Reply # 0


          

wait, are you trying to re-use the OEM head bolts? if so..DONT. you must replace them with arp's or the like. OEM head bolts are not meant to be re-torqued. and you still have to cut some off the arp's.

-----------------------------------------
2011 Nissan Xterra Pro-4x

2007 Kawasaki Ninja 650R

1996 Mitsubishi Eclipse RS-NX 75 shot, AEM CAI, P&P t/b and intake mani-SOLD

1964 Buick Electra 225-all original, all power options, 325hp, 445ft/lbs tq

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

    
DJ420aJul-31-05 12:31 PM
Member since May 19th 2004
1219 posts,
Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#91967, "RE: Cutting the head bolts?"
In response to Reply # 1




          

You dont have to cut the ARP's and you can use the OEM headbolts, just dont reuse them, get new ones. The rear headbolt closest to the drivers sides gets cut. You need to trim 2-3 threads off it. They are many ways you can do this. Dremel, hacksaw, cutoff saw, etc.

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

        
AdministratorStar Turbo TalonJul-31-05 01:04 PM
Member since Oct 21st 2003
8331 posts,
Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#91969, "RE: Cutting the head bolts?"
In response to Reply # 2




          

you can re-use oem bolts as long as they have not stretched, the dealer will tell you so. Most people are not a good judge of stretched bolts and therefore should replace them but if you know what to look for then use a thread gauge and check for stretching. I have reused head bolts that have not stretched, even checked with the dealer to see if any TSB's were released and there tech agreed that re-use is still the current practice.

You need to cut 2 threads off the 4 corner bolts. if you have installed the new gasket and it leaks, then it sounds like your bolts are stretched. a fresh gasket should not leak if torqued down. the problem of the bolts arise when the gasket gets a bit older. technically the MLS gasket is designed to solve the problem without cutting the bolts.

Terry

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

            
DJ420aJul-31-05 05:04 PM
Member since May 19th 2004
1219 posts,
Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#91983, "RE: Cutting the head bolts?"
In response to Reply # 3




          

Originally posted by Star Turbo Talon
you can re-use oem bolts as long as they have not stretched, the dealer will tell you so. Most people are not a good judge of stretched bolts and therefore should replace them but if you know what to look for then use a thread gauge and check for stretching. I have reused head bolts that have not stretched, even checked with the dealer to see if any TSB's were released and there tech agreed that re-use is still the current practice. You need to cut 2 threads off the 4 corner bolts. if you have installed the new gasket and it leaks, then it sounds like your bolts are stretched. a fresh gasket should not leak if torqued down. the problem of the bolts arise when the gasket gets a bit older. technically the MLS gasket is designed to solve the problem without cutting the bolts. Terry


Aw man, I wasnt aware of all four corners!!

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

                
AdministratorStar Turbo TalonJul-31-05 05:05 PM
Member since Oct 21st 2003
8331 posts,
Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#91984, "RE: Cutting the head bolts?"
In response to Reply # 4




          

Just as a precaution, only one documented was the left rear bolt.

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

                    
RxR_EclipseAug-01-05 03:56 AM
Old School 2GNTer
1792 posts,
Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#91994, "RE: Cutting the head bolts?"
In response to Reply # 5


          

I also read a while back if you have a 95 block you don't need to do this, guess they tapped it far enough. I think it was DarkOne who quoted this.

Kevin
The old:


The new:

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

                        
BlizareAug-01-05 09:08 AM
Donating 2GNT member
7595 posts,
Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#92000, "RE: Cutting the head bolts?"
In response to Reply # 6




          

Originally posted by RxR_Eclipse
I also read a while back if you have a 95 block you don't need to do this, guess they tapped it far enough. I think it was DarkOne who quoted this.


Thats good to know.

Cause I never cut any threads off of mine emoji

95 ownz once again


I eat emo kids for breakfast

1995 Eagle Talon (SOLD)
72' SuperBeetle
72' Standard Beetle
56' Deluxe Beetle

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

                            
destruckeclipseAug-01-05 05:15 PM
Member since Apr 26th 2004
576 posts,
Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#92012, "RE: Cutting the head bolts?"
In response to Reply # 7
Aug-01-05 05:17 PM by destruckeclipse

          

I have checked the bolts, none are stretched, now that I know 95's don't have the tap problem, the only other things are the oil sending unit or wrong torque specs. I am using a MLS gasket, so that shouldn't be a problem. Where exactly is the oil sending unit, and is there anything specific, besides leaking too look for? Also, I am using synthetic oil to lube the bolts and torquing to the specs listed in the manual:

1) Center bolts 1 through 6 to 25 ft lbs, outer 7 through 10 to 20 ft lbs.
2) Center bolts 1 - 6 to 50 ft lbs, outer 7 - 10 to 20 ft lbs.
3) Center bolts 1 - 6 to 50 ft lbs, outer 7 - 10 to 20 ft lbs.

Of course drive it around a bit, let it cool down and re-torque.

If any one has some suggestions / tips, please speak them. Thanks.


'95 GSX - Big16G ~ Leaks, but atleast it runs.

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

                                
KirbyAug-02-05 06:13 AM
Donating 2GNT member
2181 posts,
Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#92020, "RE: Cutting the head bolts?"
In response to Reply # 8




          

I can't say that the bolt thing is true for all 95's. Mine had that issue and mine is a 95. It may have something to do with build dates, but mine had the same issue and the same leak. Just a word to the wise on that.



I edited to the wiki!

Originally posted by DR1665
NOTE TO SELF: Go commando to wedding. Scar the Irishman for life.

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

                                
willmayoAug-02-05 09:39 AM
Donating 2GNT member
680 posts,
Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#92027, "RE: Cutting the head bolts?"
In response to Reply # 8


          

Originally posted by destruckeclipse
Of course drive it around a bit, let it cool down and re-torque.



the head bolts? in order to get to them you have to remove the cams again. thats a major pain in the ass imo. if you torque them correctly you shouldn't have to re-torque

--------------------
99 GS-Turbo 3.55 MTX
S16G @ ~15psi - FMIC - Forged Internals
Clinton Township, MI

Status: Parting Out...

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

                                    
destruckeclipseAug-02-05 09:58 AM
Member since Apr 26th 2004
576 posts,
Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#92028, "RE: Cutting the head bolts?"
In response to Reply # 10
Aug-02-05 09:59 AM by destruckeclipse

          

Originally posted by willmayo
Originally posted by destruckeclipse Of course drive it around a bit, let it cool down and re-torque.
the head bolts? in order to get to them you have to remove the cams again. thats a major pain in the ass imo. if you torque them correctly you shouldn't have to re-torque


Yes pain in the ass, but I always though it was necessary. Thats what I been told anyways. I think I will still cut the bolts, just in case. Thanks for the info guys.

PS: Just want to add, you car looks hawt in your sig will.


'95 GSX - Big16G ~ Leaks, but atleast it runs.

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

                                        
scirioAug-05-05 05:25 PM
Member since May 13th 2002
1637 posts,
Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#92123, "RE: Cutting the head bolts?"
In response to Reply # 11




          

I have a 95 and I had the infamous leak. I bought new OEM bolts from Bob Kise and cut the rear driver's side on down about 3 threads shorter with a dremel and a carbide cutoff wheel tip. No more leaky.

AIM - scirio

Originally posted by a drunk DSMRoadster
drink now and nafter goddanti! celebaeration birches!

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

                                            
TeamMichael_97RSAug-08-05 08:26 AM
Donating 2GNT member
5866 posts,
Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#92169, "RE: Cutting the head bolts?"
In response to Reply # 12


          

I haven't seen anyone ask if you milled the head or not?

The head needs to be straight or it won't seal, no matter what you do to the bolts. Your head could be warped causing the leaking.

Exile Racing Technologies
http://www.exileracing.com
Go that way, really fast, if something gets in your way... turn.

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

                                                
destruckeclipseAug-10-05 09:40 PM
Member since Apr 26th 2004
576 posts,
Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#92255, "RE: Cutting the head bolts?"
In response to Reply # 13


          

Originally posted by Michael_97RS
I haven't seen anyone ask if you milled the head or not? The head needs to be straight or it won't seal, no matter what you do to the bolts. Your head could be warped causing the leaking. Exile Racing Technologies http://www.exileracing.com Go that way, really fast, if something gets in your way... turn.


Well, it did not leak till I put in a new MLS gasket, and this was the first time the engine has ever been opened. I might go with the stock gasket if this doesn't work.


'95 GSX - Big16G ~ Leaks, but atleast it runs.

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

                                                    
thedawgAug-11-05 07:28 AM
Donating 2GNT member
6287 posts,
Click to send email to this author Click to send private message to this author Click to view this author's profile Click to add this author to your buddy list
#92265, "RE: Cutting the head bolts?"
In response to Reply # 14


          

Here's the thread you were looking for:
http://forums.2gnt.com/dcboard.php?az=show_topic&forum=23&topic_id=796&mesg_id=796&listing_type=search

It's in things we've seen before.

Lots of good info in there.

  

Report This Post to Admin Printer-friendly copy | Reply | Reply with quote | Top

Top 2GNT Technical Performance/Engine topic #91963 Previous topic | Next topic
Powered by DCForum+ Version 2.2
Copyright 1997-2005 DCScripts.com, Copyright 2005-2026 2gnt.com
Generated in 0.073 seconds, executing 44 queries.