Torque spec for 7bolt rods old bearnings

[dawid4444]

hey guys

i have one quick question

i just did valve job and put new piston rings in my engine

and i want to know the Torque spec for the rod cups bearnings?


it is 98 gsx 7bolt engine

and i will be putting back my old bearnings !

thank you

any one ??

i dont know because im putting back my old bearnings

 

[19Eclipse90]

For stock connecting rod bolts, see page 7 of the PDF file in this post.

http://www.dsmtuners.com/forums/articles-miscellaneous/382492-torque-specifications-specs-spec-nut-bolt.html

Connecting Rod Cap Nut: 20 Nm + 90 degree turn + 90 degree turn; 14 ft-lbs + 90 degree turn + 90 degree turn. WRONG! -- See below

 

[dawid4444]

okay thank you

 

[GRNDSM]

Are you sure that it is 90 PLUS 90 (for a total of 180*)?

Seems a bit much... The way I just read EVO8 manual, it is supposed to be 90-94* TOTAL (beyond the original torque). Anything above 94* and you are supposed to re-do it.

Sorry for bumping such an old thread, but this is a pretty big mistake, that can cost people engines... Of course, if you are rebuilding your engine without FSM, you are asking for trouble

 

[bryanwheat]

Are you sure that it is 90 PLUS 90 (for a total of 180*)?

Seems a bit much... The way I just read EVO8 manual, it is supposed to be 90-94* TOTAL (beyond the original torque). Anything above 94* and you are supposed to re-do it.

Sorry for bumping such an old thread, but this is a pretty big mistake, that can cost people engines... Of course, if you are rebuilding your engine without FSM, you are asking for trouble

The rod bolts go to a spec around 40 when torqued properly. The rod should be torqued to 14.5 than one quarter turn, any more and you would likely snap the stud. I usually set the wrench to 14.5 and do them all at that, than adjust it to 40 and when i do my 1/4 turn it will usually click at the end of the turn every time.

 

[GRNDSM]

I know what it actually is , I was just pointing out that the above suggesting of 90, +90 is dangerously wrong!

Also, I do not like using 1/4 turn figure. I know that, mathematically, it is the same as 90*, but it implies a greater tolerance than 90*-94* (as stated in EVO manual).

 

[hhuricane]

From the service manual.

BEARING CAP/BEARING CAP BOLT
INSTALLATION
(1) Install the bearing cap so that its arrow faces toward
the timing belt.
(2) When installing the bearing cap bolts, check that the
shank length of each bolt meets the limit. If the limit
is exceeded, replace the bolt.
Limit (A): max. 71.1 mm (2.79 in.)
(3) Apply engine oil to the bolt thread and contact surface.
(4) Tighten the bolts to the specified torque 25 Nm (18 ft.lbs.)
according to the tightening sequence.
5) Mark the bolt head by paint.
(6) Use the painted marks on the bolts as a reference, make
a painted mark at the base of the washer in a position
90--100 degrees in the direction of tightening from the painted
mark on the bolt.
(7) Tighten the bearing cap bolts 90--100 degrees in the correct tightening
sequence, and then check that the painted marks
are aligned.
Caution
1. If the tightening angle is less than 90 degrees, the bolt
will be loosened. Be careful to observe the
tightening angle.
2. If the tightening angle is more than 100 degrees, remove
the bolt and repeat the procedure from step (1).
(8) After installing the bearing cap, make sure that the crankshaft
turns smoothly and the end play is correct. If the
end play exceeds the limit, replace No. 3 crankshaft bearing.
Standard value: 0.05--0.18 mm (.0020--.0071 in.)
Limit: 0.25 mm (.0098 in.)

 

[19Eclipse90]

Thank you, Leon, for pointing that out. I apologize for the bad information; it is a complete mistake on my part.

Clearly, this is why you shouldn't take everything you read on the internet for truth.

 

[bryanwheat]

I know what it actually is , I was just pointing out that the above suggesting of 90, +90 is dangerously wrong!

Also, I do not like using 1/4 turn figure. I know that, mathematically, it is the same as 90*, but it implies a greater tolerance than 90*-94* (as stated in EVO manual).

I was just reassuring what you were saying, sorry if i made it look like i was disagreeing with you.