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GTIRoids
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2,918 Posts
Discussion Starter · #1 ·
OK has anyone on here ever measured the head & bolts of the GTIR? I need to send these specs to ARP ASAP.
Depth of cylinder head counter bore
Diameter (O.D.) of head counter bore
Depth of counter bore in block

I have these but check and make sure it's correct
Column height (net thickness of head)-87mm
Diameter (o.d.) of bolt hole in block-12.5 mm
Head gasket thickness (uncompressed)-1.4mm
Length of thread in block-95.312 mm
Depth of hole from surface to bottom-96 mm
Thread size and pitch-14mmx1.5mm

This what I have so far. If you GTIR peeps help me find the first three I can get the head studs made. Thanks GTIRoids
 

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GTIRoids
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2,918 Posts
Discussion Starter · #5 ·
Anyone on this list a member of one of the other country's websites? Maybe if we post this question to the guys who actually own these cars we can get our questions answered. Somebody on here has to be on their mailing list or something. Just an ideah.
 

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Witness The Power Of AWD!
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819 Posts
ill ask on the australia technical mailing list


Block counter bore OD = 12.5mm

Depth of cylinder head counter bore = 4.68mm


i am still unsure of the counter bore depth.
 

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Registered
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1,908 Posts
Slow 96R said:
Naw, I have them. ARP said they need these measurements. HELP!!!!!
I'll look when I get to the shop in the morning. I have the nissan micro fich for the GTI-R. Dunno if it has those specs though.
Oh and thats 1100 posts am I a ho yet? :tongue:
 

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GTIRoids
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2,918 Posts
Discussion Starter · #9 ·
webninja said:
bump for my buddy joel, help him get his car fixed to I don't have to drive around solo huntin for evo and wrxs
LOL thanks Dave :D

Guys I need your help fast! Look over these #'s
Depth of cylinder bore-50mm
Diameter (O.D.) of head counter bore-23.84mm
Column height (net thickness of head)-87.18mm
Diameter (O.D.) of bolt hole in block-12.77mm
Head gasket thickness (uncompressed)-1.42mm
Depth of counter bore in block-45.13mm
Length of thread in block-51.54mm
depth of hole from surface to bottom-99.03mm
thread size and pitch-11.82mm or 14mm X 1.5mm ??????

Look this over please guys. We need these studs! GTIRoids
 

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194 Posts
I passed on your request to one of the UK's best GTiR tuners and got this response.

Hello Simon ,
ARP should already have these dimensions , as we have been on this for a while now. We have sent them a head bolt sample , and then did fill in one of there manufacture sheets with all the head dimensions. I will chase them to see what the score is.

Regards
Ian
 

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GTIRoids
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2,918 Posts
Discussion Starter · #12 ·
skiddusmarkus said:
I passed on your request to one of the UK's best GTiR tuners and got this response.

Hello Simon ,
ARP should already have these dimensions , as we have been on this for a while now. We have sent them a head bolt sample , and then did fill in one of there manufacture sheets with all the head dimensions. I will chase them to see what the score is.

Regards
Ian
Sweeeeeet! :D
 
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