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Discussion Starter #1
Hi. A few of you guys might know the dilemma we're in, with regards to the retarded engine code and no available info online. For the rest, http://www.d-series.org/forums/engine-building/134172-getting-grips-b15c2.html read up.

Me and rdc are interested in knowing which ARP headstud part number is compatible with our engines. ARP gives 2 part numbers, 208-4301 (D16Z) and 208-4305 (D16Y). They sadly don't give lengths of the studs.

I measured all the 10 stock head bolts today and they all came to 130mm. This goes against the conventional assumption of there being 1 short bolt around the VTEC solenoid area when a mini-me is done.

That is why I want to know which engine's ARP headstuds all come in 130mm. The bolts might have stretched a tiny amount since they're used. So I guess the measurement might be off by a few hundreds of an inch or thereabouts. Still, having a definite answer will be great. Thanks :)
 

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D15B(all), D16Z6, D17(all): 10X140mm

D16Y(5,7,8 & B5): 10X120.5mm

D15A(84-87 Civic): 10x133mm < Unsure if threaded the same as all the rest of the D's?

I'm sure if you emailed them they could get you the correct set-up.
 

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Those are the measurements for the stock head bolts. If they don't make them, you could "DIY" you a set by getting the 208-4301 and cutting 10mm off them and use a die to thread them to the correct length.
 

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I got the measurements from my EPC(Electronic Parts Catalog), so not sure if they measured the head too. I think its common practice thou not to include the head when measuring bolts.

If it's in fact a P2"X"(D16Y8) head casting, then I'm sure it uses the 208-4305 studs.
 

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it seems tome that you need the d16z6 head studs. the only engine that runs a short stud and 9 long is 96-00 d's all 88-95 d's run 10long bolts with exception of the dohc d im not sure what it uses
 

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Honda City
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Discussion Starter #8
I've sent an email to ARP, so hopefully they will get back to me. Most companies usually don't even read these emails, so I hope ARP is different.

Rechecked the lengths. All of them 130mm including the head, and 120mm without.

@HondaDNA: It's a P2J-6 casting.
 

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ARP has great customer service. 1863 Eastman Avenue
Ventura, CA 93003
Hours: 7:30am - 4:30 pm PST
Will Call Hours: 8:00am - 4:00pm PST

Order Desk & Technical Support: 800.826.3045 or 805.339.2200, fax: 805.650.0742, [email protected]

Give them a shout.
 

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it seems tome that you need the d16z6 head studs. the only engine that runs a short stud and 9 long is 96-00 d's all 88-95 d's run 10long bolts with exception of the dohc d im not sure what it uses
This isn't true, 96-00 all TEN are 10x120.5mm, their isn't a short one. 92-95 D15B(2,7,8 ect) & D16Z6 all TEN of them are 10x140mm. It is the thread depth in the block, in the back right corner near the spool valve(VTEC) that is different between the blocks.

@HondaDNA: It's a P2J-6 casting.
97 EX D16Y8 Auto-----P2J-6 "97" stamped on right side of head

I put money on it that you have regular old D16Y head bolts. I'm sure the block is drilled and tapped no different then the D16Y blocks.


ARP has great customer service. 1863 Eastman Avenue
Ventura, CA 93003
Hours: 7:30am - 4:30 pm PST
Will Call Hours: 8:00am - 4:00pm PST

Order Desk & Technical Support: 800.826.3045 or 805.339.2200, fax: 805.650.0742, [email protected]

Give them a shout.

Email is about his only option as he is in India, and even a toll free number would be long distance for him.

Guess he could make a Google Voice account and use a USA address then call from his computer, put the time zone change would suck...
 

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Honda City
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Discussion Starter #11 (Edited)
This isn't true, 96-00 all TEN are 10x120.5mm, their isn't a short one. 92-95 D15B(2,7,8 ect) & D16Z6 all TEN of them are 10x140mm. It is the thread depth in the block, in the back right corner near the spool valve(VTEC) that is different between the blocks.



97 EX D16Y8 Auto-----P2J-6 "97" stamped on right side of head

I put money on it that you have regular old D16Y head bolts. I'm sure the block is drilled and tapped no different then the D16Y blocks.





Email is about his only option as he is in India, and even a toll free number would be long distance for him.

Guess he could make a Google Voice account and use a USA address then call from his computer, put the time zone change would suck...

Haha, since most of my work, study and recreation is through the internet, I've changed my sleeping habits to match the US timezone lol. I don't mind calling long distance, my employer pays for long distance calls anyways, a single phone call will not matter. Will give them a call tomorrow.

Eh, just for the record... I do not work in a call centre and harass you guys. I'm a student with a part-time network admin freelance gig and another part-time job in corporate financing.
 
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