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-   -   Cam chain clearance to block (https://www.offshoreonly.com/forums/general-q/354994-cam-chain-clearance-block.html)

Ryan00TJ 06-28-2018 12:19 PM


Originally Posted by Baja Rooster (Post 4634724)
I just put on a Rollmaster CS2090 and it looks super close to the #1 side of the block. I saw a note in the box that some grinding may be needed so I guess this is what they were talking about? No marks or scraping sounds when turning over to degree the cam.
https://cimg5.ibsrv.net/gimg/www.off...ff23bc182.jpeg

From the pic it looks awful close. While it misses now, what about at operating temp? Feelers gauge to check for exact numbers.

Rookie 06-28-2018 12:51 PM

Doesn't the cam naturally walk forward towards the retainer and away from the block when running? I know when I went to a roller cam and a cam button it wanted to push my timing cover off the block. I have to put a 1/4" plate between my timing cover and crossover to stabilize it. And the button wore pretty good.

sailtexas186548 06-28-2018 01:02 PM

You could have ground it and been done already :D

i would grind it, and never worry about it again.

adk61 06-28-2018 01:10 PM


Originally Posted by F-2 Speedy (Post 4634741)
I guess if they send a note in the box their product has clearance issues in some cases. that really blow's who wants to grind on a new build

why not use the right chain in the first place... the Gen 6 with step nose cam/retainer system is great!!! wish all BBC were this way, to run a dbl row chain you need to clearance the block... the single severe duty chain system by Cloyes (9-3649x3) made for the Gen 6 is a brute single row true roller, multiple keyway for variety of timing positions. Just my $.002

Gimme Fuel 06-28-2018 01:39 PM


Originally Posted by Baja Rooster (Post 4634740)
Yep. Gen VI step nose with retainer. Chain set has the Torrington bearing.

I had same set with my GMPP Gen VI block. Had to grind quite a bit. Didn't rub during assembly/mock up, but certainly did when ran!

Baja Rooster 06-28-2018 01:50 PM


Originally Posted by F-2 Speedy (Post 4634748)
Did you price Cloyes, just curios how they priced out............never used roll master

I looked at Cloyes and looks like a fine set and cheaper too. This was about $125 with more adjustability, which I didn’t need.


Originally Posted by Ryan00TJ (Post 4634757)
From the pic it looks awful close. While it misses now, what about at operating temp? Feelers gauge to check for exact numbers.

Exactly. I don’t want a problem later.


Originally Posted by sailtexas186548 (Post 4634768)
You could have ground it and been done already :D

i would grind it, and never worry about it again.

Totes.


Originally Posted by adk61 (Post 4634770)
why not use the right chain in the first place... the Gen 6 with step nose cam/retainer system is great!!! wish all BBC were this way, to run a dbl row chain you need to clearance the block... the single severe duty chain system by Cloyes (9-3649x3) made for the Gen 6 is a brute single row true roller, multiple keyway for variety of timing positions. Just my $.002

Because not all of us do this for a living to know and the Rollmaster was highly recommended in the OSO threads that I read. Comp Cams has a tough single roller for near $250. I don’t see your recommendation in my thread asking this exact question.
https://www.offshoreonly.com/forums/...favorites.html


Originally Posted by Gimme Fuel (Post 4634777)
I had same set with my GMPP Gen VI block. Had to grind quite a bit. Didn't rub during assembly/mock up, but certainly did when ran!

Thanks. Grinding will be done! No big deal.

Mohavvalley 06-28-2018 02:50 PM


Originally Posted by Baja Rooster (Post 4634780)
Because not all of us do this for a living to know and the Rollmaster was highly recommended in the OSO threads that I read. I don’t see your recommendation in my thread asking this exact question.
https://www.offshoreonly.com/forums/...favorites.html

I feel ya Rooster!
I've asked the same question in 2 different threads and got nothing but crickets for almost 2 weeks
https://www.offshoreonly.com/forums/...-nose-cam.html
https://www.offshoreonly.com/forums/...iming-set.html

I looked up your part number on roll masters product list and a CS2090 does not even come up

Crude Intentions 06-28-2018 03:58 PM

I have a double roller recommended by Eddie young. Had to clearance the factory timing cover but that took minutes and nowhere near the engines. Howard's 94309.

Mohavvalley 06-28-2018 09:26 PM


Originally Posted by Crude Intentions (Post 4634814)
I have a double roller recommended by Eddie young. Had to clearance the factory timing cover but that took minutes and nowhere near the engines. Howard's 94309.

Gen 6 -10 bolt stamped cover or Gen 5 cover -6-bolt stamped cover?

ezstriper 06-29-2018 05:51 AM

this why many dont run double roller setup...not needed for the most part in my opinion


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