Rb30 Main Cap Bolts

[Phobic]

hey guys

im about to put my bottom end together, and dont know wether to upgrade the main cap bolts or to just use brand new nissan ones

is there an upgraded bolt for this?

or is the standard (brand new bolt) one more than capable?

thanks

mitch

[r33_racer]

ARP stud kit!

Depends on the horsepower you are chasing. People use standard bolts upto 500whp....

[Phobic]

so you can get an arp stud kit for the main caps too? (already have one for the head)

what cost are they roughly about?

am chasing round 500 to 600 rwhp

[jangles]

yes you can

$280 approx, depends where you get them, spool have them, lewis engines etc.

[rockabilly]

i used 300zx arp main stud/nut kit on my 33gtr rb26/30 set up, you need to shorten one stud for the drive shaft clearance.done two now both done over 7000 miles no issues..bernie uk

[R.I.P.S NZ]

My 240z RB30 engine has stock used mains bolts so its pretty safe to say that studs are absolutly NOT needed.

[Fastrotor]

Ha, i was reading this thread thinking, hmm Rob in NZ runs 7.7's odd and doesn't use studs..... and if anyone needed them.... ! Save your money, find something else to spend it on .(like thats hard)

Gary

[R34GTFOUR]

Does anyone know the ARP part number for RB30 Main Studs? I've searched bloody everywhere and can't find it, its not in their catalog either..

[Alf]

ARP Nissan RB30 Main Stud Kit 202-5215

[R34GTFOUR]

Thanks Alf, really appreciate it. I'd almost given up.

[R34GTFOUR]

Can any else confirm that part number? I tried to order it through a supplier and they said the part number wasnt valid. Im not sure if they were being slack or if the number is wrong.

Cheers

[Alf]

I bought the stud kit from Rocket Industries using my work account.

[R34GTFOUR]

I'd say the bloke i was dealing through is just a slacker, he would of gone off the ARP catalog and seen it wasnt listed then given up..

I'll give another mob a go next week.

Cheers

[Adriano]

I got mine through lewis engines, he is on the forum. Im pretty sure ti was cheaper than $280

[nissan200sx.dk]

I use original unbrako 12.9 bolts for mains. They have tensile strenght of ~1250MPa.. (~180.000 psi). This is pretty close to ARP bolts, for a fraction of the cost of real ARP bolts...

So looking for better bolts than std, std are pretty strong as RIPS prove, but still want better but think ARP is to expensive try unbrako 12.9 bolts.

Edited September 16, 2009 by nissan200sx.dk

[waxracing]

I use original unbrako 12.9 bolts for mains. They have tensile strenght of ~1250MPa.. (~180.000 psi). This is pretty close to ARP bolts, for a fraction of the cost of real ARP bolts...

So looking for better bolts than std, std are pretty strong as RIPS prove, but still want better but think ARP is to expensive try unbrako 12.9 bolts.

Im going to be using stock bolts in mine

Heck if rips can do it then its good for me

Im going for arp rod bolts and im done

[Looney_Head]

sorry to dig up a old thread but does anyone know the Nissan part number for the main cap bolts? or do people just reuse their old ones?

[KiwiRS4T]

sorry to dig up a old thread but does anyone know the Nissan part number for the main cap bolts? or do people just reuse their old ones?

The answer is in the 5 lines above your post. (Unbrako available from Moyes and Groves, WR Twigg/ Grossmans).