Club G40 Forum
Technical => Engine and Transmission => Topic started by: POLOMON on August 13, 2012, 07:00:36 pm
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Hi everyone,
Managed to order the last PY head gasket in the UK that my local parts supplier could get but I can't get the 98mm head bolts....
HOWEVER! I've spent a good hour in the parts catalogues with him checking torque figures, bolt lengths and thread lengths. The cars we did find the the correct spec bolts was actually a 1.5 santana and a 1.0 polo....
Now, my question, as you probably have guessed is can I use either of these bolts on a G?
I didn't want to say yes order them to him incase the metal wasent the same or something else as I've truely no idea. They torque the same, the heads are m11, the thread is indeed 98mm.... But I'm not sure so anyone who has any guidance, please, fire away.
Regards,
Ben
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I always use VW bolts. IIRC its more to do with the tensile strength.
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according to etka the g40 bolts are g40 specific.
they are same length as earlier polos (solid lifter heads) at 98mm but from what i can gather these are only 8.8 tensile not 10.9 which g40s are.
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Ahh I see, it was the tensile strengths I wasent sure on. So VW can still get the bolts? I ordered a brake reservoir and they told me they couldn't get bolts or gaskets.... Hence resorting to the local parts place who managed to get me a original G40 gasket anyway.just not sure how to get hold of the bolts now, if anyone can help with that?
Not having a car isent easy, local parts places aren't that local when you live in the sticks :-(
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Your local VW cant get them? Maybe there getting obsolete?
IIRC there about £8 a bolt, and you need 10 so its costly.
You can get them here though if VW cant get them:
http://www.maxrpm.de/Cylinderhead-bolts-kit-for-all-G40-and-G60-models-Elring-819817
http://www.bar-tek-tuning.com/lshop,showdetail,11244,en,1344886622-11299,1138132527.1138132721,2100008,60,Tshowrub--1138132527.1138132721,.htm
Or if you got more money to spend
http://www.bar-tek-tuning.com/lshop,showdetail,11244,en,1344886622-11299,1138132527.1138132721,2140074,52,Tshowrub--1138132527.1138132721,.htm
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Thanks very much jezza. VW said they can't see any on system in dealers in the UK after looking. So I guess, obsolete :-( much to my upset!
Well not all bad news, now I have a G40 genuine gasket I'll set that aside and as a temp I'll get the aex head gasket with the 95mm bolts and long term I'll invest in the ARP's as it isent going to get any easier to get hold of bolts surely :-(
Thanks Pete/Jezza :-)
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the max-rpm ones and bartket - well g60s run stock polo headbolts not g40 spec. so they'll supply the 96mm long 8.8 ones you can get at gsf for £1 a bolt
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i´ve been strugling to find g40 bolts arround, is it too bad to reuse them?
dealers only can get me non g40 bolts..
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id rather use new non g40 ones than old g40 ones but that's my opinion
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My local gsf managed to source me some g40 specific elring head bolts from germany cheaper than any one else and got me a full g40 head gasket kit
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You should never re use the bolts as they will stretch. Even after my engine rebuild that lasted 50 miles I didn't re use them for my next engine.
I will ask my local Vw and see what they say. Everyone seems to get different answers from different Vw's which I never understand.
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My local gsf managed to source me some g40 specific elring head bolts from germany cheaper than any one else and got me a full g40 head gasket kit
look on the elring catalogue... they dont list g40 headbolts as specific.
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I ordered 10 head bolts from Vw 2weeks ago. When I got them the guys there said they only had 19 left in stock. So there should be 9 left unless someone has bought these... Not a clue how they have 9 left, I assume they have lost one at some point!
Either way it's getting harder to get engine parts now as more an more ins becoming obsolete it seems.
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Does seem to be abit of a pain getting parts!
Whats the story on them ARP's, re-useable a certain amount of times or?
I'll get a AEX head gasket and 95mm bolts ordered tonight as a temp and use this G40 gasket and the arp's when i comes off the road for abit more umph ::)
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Now i dont know if this is useful at all...
but someone posted this not too long ago.
http://www.ebay.co.uk/itm/BGA-Automotive-Head-Bolts-BK4398-/330728967871?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item4d00fb8ebf#ht_1092wt_1141
doesnt mention tensile strength .. but does have listed G40 specific bolts..
someone to clarify would help.
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That was the post i got my bolt specs from lol. Also to add, thats the catalogue part number we found, read in the book it was a 95mm bolt not 98.... So either the books wrong or that web listing is wrong.
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g40 ones are 98mm long.
The bga ones there i have in my shed - they are 10.9 (well ones i have). However BGA list the g40 headgasket as same as a 1.3cl etc. which it isnt!
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maybe worth emailing them to see if they have info on tensile strength ?
Its hard to know whats what! sls and bar-tek advertise them but they are not correct... although im sure many owners have used them!
Maby it depends how serious your engine build is?! ... i dont really know.
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g40 ones are 98mm long.
The bga ones there i have in my shed - they are 10.9 (well ones i have). However BGA list the g40 headgasket as same as a 1.3cl etc. which it isnt!
Sorry Pete i didnt word it very well, the catalogue with the same part number in we found said the bolts were 95mm long. so not G40 items as you say they are 98mm.
So i think given the book is manufacturer i'd tend to believe that than a Ebay listing, but nothing is to say he/she hasent measured the bolts and its the manufacturer that had a misprint in the book.
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bga catalogue online does say 98mm long though?
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100 percent the one in store said 95 for the PY, we did look at everything 98mm and the PY engine code came as 95mm in the book, G60 wasent listed atall either as i was going to get them if they came back as 98.
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I cant seem to get past the parts list on the online BGA catalogue :-( I'd take a print screen to show them otherwise. Never mind, stock 95mm's and aex headgasket shall suffice for the time being.
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http://www.bgautomotive.co.uk/bgacat/tech.asp?vechicleui=19311&partno=BK4398 if that works?!??
be also aware that mk2 g40s dont have a specific headbolt either!
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Excellent! Thanks Pete, ive printed a copy of that off anyway so i shall have words ;)
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Thanks very much for the help chaps, Took that copy into the local place and it was a other catalogue that showed it as 95mm not the BGA one. Dug that out and it is indeed showing them as 98mm so ive got some on order :D 60 something pounds plus the dreaded.
Thanks chaps :-)
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they cheaper than that on the ebay link?
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they cheaper than that on the ebay link?
I had a credit note for a clutch that was £80.... so got that bolts and gasket for very little money :-) I very rarely use that particular parts place, im usually on ebay and the likes but i had to get the money back for this credit note as it runs out the end of this month. Wasent my clutch but i got the credit note so head bolts and head gasket cost just over a fiver....Thats why i was on here asking about other options ha. happy chappy anyway, so thanks Pete :D
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Interesting stuff, i was aware that G40 bolts were specific and longer than the others but i didnt know that they were higher in tensile strength....
In my case i have a skimmed head and a lightly decked block and am going to using a metal head gasket as i expect to be 200+ bhp. I planned to use non-G40 bolts when i build the engine up in a few weeks as they were shorter and certainly dont want to bottom out with the longer ones, so my question is to those in the know, can you get higher tensile strength bolts in the shorter length from anyone or do most that need to use the shorter bolts just go with the 8.8's?
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wouldnt think they actually need to be shorter... yoof used a metal gasket and g40 bolts to good effect.
That said hayesey uses polo cl 8.8 bolts on his turbo and he drives it like a roughassednortherner
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I didn't know G40 bolts were a higher tensile strength either. I thought it was just the length that was different to account for the standard g40 gasket being quite thick. Since I use a thin metal gasket I used the shorter bolts.
Anyway it's survived lots of track days and no head bolts have snapped, it doesn't use any water or leak.
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Thats good to know that you use the shorter bolts on your track car. Mine will one day be driven in mucho anger so i want them to hold up. Im sure that using the shorter ones will suffice but its also interesting to know that Yoof uses the longer ones with the metal headgasket... i'll have to check which i have in the big box of bits!