Main/Conrod bearing cap torques

Main/Conrod bearing cap torques

Author
Discussion

Belle427

Original Poster:

8,947 posts

233 months

Saturday 13th January 2018
quotequote all
I wonder could anyone tell me if the torque settings for a 1995 3.9 engine are the same as below, particularly the main and conrod bearing caps.
Thanks in advance.
http://www.mez.co.uk/tuningtheroverv8-pt11-new.htm...

Boosted LS1

21,185 posts

260 months

Saturday 13th January 2018
quotequote all
That looks correct to me. Don't forget to use an anaerobic sealant under the rear cap. It's expensive but can be found cheaper on line.

Belle427

Original Poster:

8,947 posts

233 months

Sunday 14th January 2018
quotequote all
Thank you

Belle427

Original Poster:

8,947 posts

233 months

Sunday 14th January 2018
quotequote all
Picture of the cam and main/big end bearings removed today at 78000 miles. Plenty of wear on the big ends, cam does not look too bad.
Crank is fine.

N7GTX

7,864 posts

143 months

Sunday 14th January 2018
quotequote all
Caught it all just in time smile Is the crank still good - no scores or wear? Cam may have been changed at the 50k mark perhaps? Don't forget to check and replace the cam bearings if required. wink - mine were shot at 49k eek

Boosted LS1

21,185 posts

260 months

Sunday 14th January 2018
quotequote all
A Lisle 18000 is just the job for changing cam bearings, I love mine. Cam looks good in that picture.

Belle427

Original Poster:

8,947 posts

233 months

Sunday 14th January 2018
quotequote all
The wear is possibly due to the fact our cars are only used now and again, it’s the only explanation I can think of.
I’m thinking about using a higher quality oil when it’s all done changed once a year, something like this.
https://www.opieoils.co.uk/p-68898-fuchs-titan-rac...

BIGMIKE1

339 posts

228 months

Wednesday 17th January 2018
quotequote all
Cam looks to have done really well as there was definetly no history of it being changed and only 2 owners before Me. Surprised at the big ends but at least you've caught it in time.
I thought you were going the 4.5 route Now?
Mike

Belle427

Original Poster:

8,947 posts

233 months

Wednesday 17th January 2018
quotequote all
BIGMIKE1 said:
Cam looks to have done really well as there was definetly no history of it being changed and only 2 owners before Me. Surprised at the big ends but at least you've caught it in time.
I thought you were going the 4.5 route Now?
Mike
Decided against the 4.5 route as i could not justify spending the money. I have had the heads done to stage 3, improved the induction and will fit a new MC1 cam.
Didn't intend to pull the block but im glad I did.

N7GTX

7,864 posts

143 months

Wednesday 17th January 2018
quotequote all
Belle427 said:
The wear is possibly due to the fact our cars are only used now and again, it’s the only explanation I can think of.
I’m thinking about using a higher quality oil when it’s all done changed once a year, something like this.
https://www.opieoils.co.uk/p-68898-fuchs-titan-rac...
This is the reason why I always advise potential boosters to strip and check the engine before fitting their supercharger or turbo. scratchchin

Belle427

Original Poster:

8,947 posts

233 months

Wednesday 17th January 2018
quotequote all
N7GTX said:
This is the reason why I always advise potential boosters to strip and check the engine before fitting their supercharger or turbo. scratchchin
Yes id agree, I almost went for the SC kit and was going to just bolt it on after compression tests were confirmed good.

BIGMIKE1

339 posts

228 months

Thursday 18th January 2018
quotequote all
Belle427 said:
Yes id agree, I almost went for the SC kit and was going to just bolt it on after compression tests were confirmed good.
I'd been thinking along the same lines when the turbo kits started to appear.
Does it have pocketed pistons? I always meant to chuck endoscope camera down when changing the plugs just to see.
Mike

Belle427

Original Poster:

8,947 posts

233 months

Thursday 18th January 2018
quotequote all
No pockets and its one of the what id call the interim engines (3.9), so no cross bolting but wider main bearing caps that could be cross bolted.

Sardonicus

18,958 posts

221 months

Thursday 18th January 2018
quotequote all
Belle427 said:
No pockets and its one of the what id call the interim engines (3.9), so no cross bolting but wider main bearing caps that could be cross bolted.
That would be correct for that year car wink