help with crank bolt/head bolts please?

[ATpossible]

does anyone know the size of the crank bolt? i was going through the FSM and it said something is 50mm. however the diameter of the hole (through crank pulley) is less than 2in. and 50mm is almost 2in so it has to be less than 50mm.

i tried measuring tape and it appeared to be around 1 and 1/4"...is that the head size? or is it in mm? any help is greatly appreciated. especially since its one of the few things keeping me from completely tearing motor down.

the other question i had is the size of the head bolt? this one i cant tell very well the size. my biggest allen wrench (8mm) looks to be at least a couple sizes too small. head bolts might be 10mm? or bigger? i jus need to know what size allen wrench i need. thank u early for help with this.

Thanks so much for any help with either! or both!!

[Carl H]

m27 head on the crank bolt, proly 50mm long...the head bolts are m10 allen head, you'll need an allen socket to remove them.

[ATpossible]

ya the 50mm long thing is wat i was guessing after looking more at the FSM and noticing same figure else where and i knew it wasnt head width on those. thanks so much for the info.

curious tho...the m thing? is that suppose to stand for mm? than the # following it stands for how many mm?

sorry if newb type question but i saw some bolts shown like that in FSM like M12. i tried refering to GI etc...but no luck. however i "think" M12 was put down for the crank pulley so thats y i knew it couldnt be head width. i might have crossed #'s tho. i forget easily

oh and i plan on getting alan socket since im sure those head bolts are tight!

By the way my engine is rb26, i hate when people dont even put wat engine they r asking about i feel dumb. next question is about rb26...

carl H - u seem bright - if i take off all the bolts connecting oil pan to block and the 2 bolts that seem to go through oil pump from the oil pan; can i left the engine block away from oil pan, x member, etc... safely?i have complete front subframe all still connected. i've been looking around the engine and FSM to make sure nothing is connected inside as it seems to not be. jus wanna be sure not to break something by lefting block.

any1 else can feel free to answer last ? as well. thanks again.

[Darius]

Yes the number following the "M" is the diameter of the fastener shaft followed by the pitch of the threads (1, 1.25, 1.5 typically).

To remove the head bolts you WILL need an allen head socket.

Are you trying to lift the RB26 out of a clip or out of your 240? I'm a little confused by what you are asking.

[Carl H]

whoops, darius is right i should have put 27mm for the crank bolt socket and not m27, dont mind me.10mm for the head bolts.

[ATpossible]

Yes the number following the "M" is the diameter of the fastener shaft followed by the pitch of the threads (1, 1.25, 1.5 typically).

To remove the head bolts you WILL need an allen head socket.

Are you trying to lift the RB26 out of a clip or out of your 240? I'm a little confused by what you are asking.

weird...ill check the fsm again. i ended up getting a 30mm socket and it fits. is it suppose to be 27?

ill take a pic tonight and post it but no i took the whole front engine and suspension from underneath the clip. so that is how it sits right now with x member still connected

oh and i got the head off 2. so thanks for info carl on the allen size.

do u guys know where i can get a crank bolt remover "kit"? i was looking at pics and check autozone etc...and no luck...

[gawdzilla]

the rb26 is a 30mm. rb25 is 27mm. i believe the crank bolt itself is interchangeable (you can thread either bolt into either motor), just the socket size on the head of the bolt is different.

[mello88]

Mine is 27mm not 30mm. Edit: didn't know there were different crank bolt sizes..

Also Autozone lets you borrow the crank pulley removal kit (if that's what you're asking about?) for a small deposit.

[Carl H]

i wouldnt use a 'jaw'type puller as they tend to damage and can deform the rb's crank pulley.on the pulley should be some threaded holes, get some bolts that fit those holes and use a puller with a thru bolt design, works much better...

[ATpossible]

ok now that kinda worries me. i think the biggest socket i own is 27mm and it was 2 small. what could that be about?

oh thanks for the pic!

i wouldnt use a 'jaw'type puller as they tend to damage and can deform the rb's crank pulley.on the pulley should be some threaded holes, get some bolts that fit those holes and use a puller with a thru bolt design, works much better...

is the through design look like the one on the FSM? there was 2 threaded holes on the first crank pulley. they r small tho...

i cant get the bolt off tho...isnt the bolt suppose to come off first before trying to remove the pulley? or do they both come off w/ that crank pulley remover?

sorry for newb questions but the FSM seriously skipped that part and no pic on taking bolt off and didnt really say much except it all of a sudden being off. then it moved on. ill check it again

where does a ring stopper go?

here is my setup as it is at my home...

block still on mounts connected to x-member and all components on intake and exhaust side are removed ie. turbos, manifolds, etc...

head is off, transmission is off. clutch is still connected and that is pretty much it. oh and the oil pump and water pump are still connected until i can get this bolt off

[Darius]

Yes you need to remove the crank bolt first and that will be semi-difficult without the transmission on. What you need to do is take the engine out and put it on a motor stand. Then, use a wrench on one of the flywheel bolts to jam the flywheel in place. Once you have leverage on the flywheel, you can loosen the crank bolt. Once the bolt is out, use the gear puller with a socket pushing on the crank snout to kind of pry it off. Tapping with a hammer on the edges of the pulley also helps keep it straight so it doesn't bind.

[gawdzilla]

ok now that kinda worries me. i think the biggest socket i own is 27mm and it was 2 small. what could that be about?

you said you owned a rb26, which means your bolt should be a 30mm like i said above. whats the problem here?

[ATpossible]

you said you owned a rb26, which means your bolt should be a 30mm like i said above. whats the problem here?

lol holy crap i didnt even notice your previous post

my bad

Then, use a wrench on one of the flywheel bolts to jam the flywheel in place. Once you have leverage on the flywheel, you can loosen the crank bolt.

okay ill try that tonight, thanks! ill send pics still if you guys want