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sciroccosteve
Joined: 16 Apr 2012
Posts: 215
Location: Rochester, NY
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 Posted: Wed Apr 18, 2012 2:28 pm Post subject: Are the 2.0 head bolts reusable? |
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As the title says, are they?
My common sense says they are not, as I feel they would be stretch bolts.
Looking around on the net though.....I am not seeing a whole lot on this subject.
Forgive me, I have yet to receive my manuals for this new toy of mine
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1979 924
2000 V6 Passat
"Let the fools have their tar tar sauce."
C. Montgomery Burns |
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924-76
Joined: 05 Jun 2006
Posts: 1489
Location: Ontario, Canada
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| Posted: Wed Apr 18, 2012 7:29 pm Post subject: Re: Are the 2.0 head bolts reusable? |
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| sciroccosteve wrote: | | As the title says, are they? |
No
| sciroccosteve wrote: | | My common sense says they are not, as I feel they would be stretch bolts. |
Yep
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1976 924 N/A ROW SOLD
1980 931S
1981 931 Part car RIP |
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emoore924
Joined: 13 Apr 2004
Posts: 2822
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| Posted: Thu Apr 19, 2012 2:37 am Post subject: |
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Actually, there was some debate on this in the past. IIRC, there were two kinds of bolts, stretch and not stretch. One had threads all the way up the shaft and the other had threads cut only on the first 20mm or so of the end of the bolt. Plus the heads were different -- one a 6-point, the other a 12-point (triple-square). I can't recall which was which but some searching might discover the threads (arr arr). Of course (and no disparagement meant...), I'm not sure the opinion sources were authoritative, or not, it is the internet, so take it all with a grain of salt.
Also, I think the bolts were something like two bucks a piece last time I checked so you're chucking about $20 worth of hardware if you don't reuse. |
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sciroccosteve
Joined: 16 Apr 2012
Posts: 215
Location: Rochester, NY
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| Posted: Thu Apr 19, 2012 3:21 am Post subject: |
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| emoore924 wrote: | Actually, there was some debate on this in the past. IIRC, there were two kinds of bolts, stretch and not stretch. One had threads all the way up the shaft and the other had threads cut only on the first 20mm or so of the end of the bolt. Plus the heads were different -- one a 6-point, the other a 12-point (triple-square). I can't recall which was which but some searching might discover the threads (arr arr). Of course (and no disparagement meant...), I'm not sure the opinion sources were authoritative, or not, it is the internet, so take it all with a grain of salt.
Also, I think the bolts were something like two bucks a piece last time I checked so you're chucking about $20 worth of hardware if you don't reuse. |
How the hell are parts so cheap!
At under even 10 a piece, even if they are reusable, why not replace them? God I love this car
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1979 924
2000 V6 Passat
"Let the fools have their tar tar sauce."
C. Montgomery Burns |
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fiat22turbo
Joined: 18 Jan 2006
Posts: 4040
Location: Portland, OR
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| Posted: Thu Apr 19, 2012 5:50 am Post subject: |
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Studs are a bit better (and more expensive). There's also a MLS Cometic head gasket available as well that you can get in .027 thickness to add .5 point in CR in your motor (taking it to 9:1, closer to the 125hp euro-spec 9.5:1 motors)
BTW, Don't get too excited. There are more and more NLA parts for this motor.
Wait until you have to try and repair the transaxle or repair the cam/followers or find bearings for the bottom end.
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Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose) |
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sciroccosteve
Joined: 16 Apr 2012
Posts: 215
Location: Rochester, NY
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| Posted: Thu Apr 19, 2012 7:02 am Post subject: |
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| fiat22turbo wrote: |
BTW, Don't get too excited. There are more and more NLA parts for this motor.
Wait until you have to try and repair the transaxle or repair the cam/followers or find bearings for the bottom end. |
Dream Crushers
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1979 924
2000 V6 Passat
"Let the fools have their tar tar sauce."
C. Montgomery Burns |
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emoore924
Joined: 13 Apr 2004
Posts: 2822
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| Posted: Thu Apr 19, 2012 10:18 am Post subject: |
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Heck, I knew you were in trouble when you started a thread that said you didn't have anything else to fix.
Har! |
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sciroccosteve
Joined: 16 Apr 2012
Posts: 215
Location: Rochester, NY
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| Posted: Thu Apr 19, 2012 10:32 am Post subject: |
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| emoore924 wrote: | Heck, I knew you were in trouble when you started a thread that said you didn't have anything else to fix.
Har! |
As I am now learning, I will always have something to fix!!!!!
and again, damn do i love this car 
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1979 924
2000 V6 Passat
"Let the fools have their tar tar sauce."
C. Montgomery Burns |
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StienbargerR
Joined: 28 Oct 2005
Posts: 1362
Location: Richmond, IN
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| Posted: Thu Apr 19, 2012 12:42 pm Post subject: |
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Don't worry steve,
In a years time, you will get to know your 924 very well. You'll probly get to know it better than you even wanted to.
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1978 924 NA
-250lb lowering springs, Euro Pistons |
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tyfighter123
Joined: 19 Jan 2010
Posts: 551
Location: Colorado
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| Posted: Thu Apr 19, 2012 12:43 pm Post subject: |
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| Quote: | | In a years time, you will get to know your 924 very well. You'll probly get to know it better than you even wanted to. |
You can say that again and again and again.........................
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Porsche 924 1977 N/A
Mustang GT/CS 2007
Porsche 924S 1987 (parts car)(cut up and recycled)
Porsche 911S 1976
Porsche 931 1980
Porsche 931 1980 (parts car) |
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sciroccosteve
Joined: 16 Apr 2012
Posts: 215
Location: Rochester, NY
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| Posted: Thu Apr 19, 2012 2:24 pm Post subject: |
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| tyfighter123 wrote: | | Quote: | | In a years time, you will get to know your 924 very well. You'll probly get to know it better than you even wanted to. |
You can say that again and again and again......................... |
hahahaha 
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1979 924
2000 V6 Passat
"Let the fools have their tar tar sauce."
C. Montgomery Burns |
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!tom
Joined: 28 Aug 2006
Posts: 1941
Location: Victoria, BC Canada
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| Posted: Thu Apr 19, 2012 3:28 pm Post subject: |
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| sciroccosteve wrote: | | How the hell are parts so cheap! |
They're either cheap or totally unavailable.
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78 924 NA
5-lug |
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ideola
Joined: 01 Oct 2004
Posts: 15550
Location: Spring Lake MI
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| Posted: Fri Apr 20, 2012 1:23 am Post subject: |
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The ARP head studs are $132 + shipping.
Set of 10 OEM head bolts are $60 + shipping (does not include the washers).
Both available from yours truly (among other sources).
| Quote: | | There's also a MLS Cometic head gasket available as well that you can get in .027 thickness to add .5 point in CR in your motor (taking it to 9:1, closer to the 125hp euro-spec 9.5:1 motors) |
The half point of CR increase is a rule of thumb that I posted a week or so ago. Be careful about relying on rules of thumb as empirical data. There are many variables that affect the CR...even tiny variances in the deck height will have significant impact to CR. If you're going to go to this extent on a rebuild, I would strongly encourage you to measure and blueprint your engine so you know exactly what you're dealing with. There are at least two or three examples of blown motors on this forum that I am convinced were due to folks making assumption about CR (I've gone back and checked their math).
Cometic gasket options are here.
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erstwhile owner of just about every 924 variant ever made |
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