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Old 04-15-2017, 05:30 PM   #1
AlexStromberg
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Default "ARP" style bolts and such for b230?

I've tried looking on ARP's website but no luck there, only for the 5-cyl. So is there any other manufacture who makes strong bolts and such for the redblocks?
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Old 04-15-2017, 05:31 PM   #2
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I think yoshifab.com had them last I looked..
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Old 04-15-2017, 05:35 PM   #3
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I think yoshifab.com had them last I looked..
There is some, thanks!
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Old 04-15-2017, 06:02 PM   #4
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You can always call the supplier or arp with the thread and bolt dimensions and they will say yes or no.
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Old 04-15-2017, 06:11 PM   #5
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You can always call the supplier or arp with the thread and bolt dimensions and they will say yes or no.
That is also an option.
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Old 04-15-2017, 08:41 PM   #6
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I stock the ARP stud kits for 8v engines
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Old 04-15-2017, 11:43 PM   #7
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So nice to use...just swapped heads on mine today, so much nicer than bolts.
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Old 04-16-2017, 01:43 AM   #8
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I'm not hating on the ARP secret sauce but would Grade 12.9 studs(or bolts) with the right pitch work just as well(for these engines)? A few discussions in the past had suggested they would, others say they wouldn't; Arguments go back 14 years with no clear answers...

FWIW The head bolts that I pulled today were grade 10.9...
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Old 04-16-2017, 08:12 AM   #9
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I put the 12.9 grade in my engine, according to the given tensile strength and shear force, the 12.9 grade bolts are very close to the ARP studs in strength.
I bought the 12.9 grade allen bolts and 10.9 grade shims, for around 1/10 of the price of ARP studs in the States, and that's without shipping and customs clearance on the studs
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Old 04-16-2017, 08:53 AM   #10
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Quote:
Originally Posted by Addi_Sig View Post
I put the 12.9 grade in my engine, according to the given tensile strength and shear force, the 12.9 grade bolts are very close to the ARP studs in strength.
I bought the 12.9 grade allen bolts and 10.9 grade shims, for around 1/10 of the price of ARP studs in the States, and that's without shipping and customs clearance on the studs
Did you use the old school torque procedure that requires re torquing them after you run it?
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Old 04-16-2017, 09:19 AM   #11
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Something to keep in mind as well. The ARP stuff is fine thread at the top, a touch better for more even clamping force. That's from a couple different sources.
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Old 04-16-2017, 11:31 PM   #12
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does the B234F engine use the same studs?

Last edited by bearman683; 04-17-2017 at 12:17 AM..
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Old 04-17-2017, 08:42 AM   #13
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Quote:
Originally Posted by bearman683 View Post
does the B234F engine use the same studs?
threads are the same, but the studs are of different lengths.
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Old 04-17-2017, 09:00 AM   #14
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ARP has almost ANYTHING in nuts, bolts, and studs. Just because you don't see a listing for whatever engine doesn't mean that they can't take care of you, just that they don't have a pre-made kit for that application. Contact them with sizes and lengths and they can take care of you. I used to get dyno driveshaft nuts, bolts, and washers from them and there for sure was not a catalog listing for that hardware.

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Old 04-17-2017, 10:05 AM   #15
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Quote:
Originally Posted by gsellstr View Post
Something to keep in mind as well. The ARP stuff is fine thread at the top, a touch better for more even clamping force. That's from a couple different sources.
this plus 1
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Old 04-17-2017, 10:10 AM   #16
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Vad är det du ska ha det till då? Acm har arp,till 230 motorerna och kl har nog lite också!
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Old 04-17-2017, 10:44 AM   #17
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Quote:
Originally Posted by bearman683 View Post
does the B234F engine use the same studs?
No, but it's super easy. From the right supplier.
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Old 04-17-2017, 08:47 PM   #18
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I got mine from yoshifab. I should get a set for my 940 too as it's a little bit of extra insurance
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Old 04-18-2017, 03:06 PM   #19
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Quote:
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Did you use the old school torque procedure that requires re torquing them after you run it?
No, as the head was already on with the 10.9 grade bolts I just changed the bolts one by one, in the same order as when replacing a gasket, and over torqued them compared to the manual.
I have an industrial manual indicating the maximum torque for a 12.9 grade bolt, I picked a number half way between the two manuals
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