JP gear with a RM chain?
wuuuuut.
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12-13-2011
JP gear with a RM chain?
wuuuuut.
12-13-2011
Originally Posted by bluegtp91
Been in bed not feeling well all morning, now I gotta make my way to work. I'll get pics and measurements tonight when I get off work. I just thought the RM's had single piece crank gears?
12-13-2011
As far as I know its a rollmaster from ZZperformance And the box has not been opened as far as I could see.
And I measured it again with the right tools and the rollmaster was 0.0200 mm smaller than the crank and the stock chain hub ( how do I call it ) the one that goes over the crank was 0.0400 bigger
I machined the crank and the rollmaster hub to get the angle right ,because it was not right . Did not got time to install the crank back in the engine and see if the chain runs free from the crank and that it line's up with the cam
Here are some pic's so far.
bevore
after
tomorrow i will install it hope it will work .
12-13-2011
Hope u get well soon and good luck @ work
12-13-2011
They do.
If it was used I wonder if someone sold him a JP gear with a RM chain...as I thought they were different chains. Maybe not, oh well. Never seen a JP in person...just dealt with a few RM doubles, RM singles, and stockers...
12-13-2011
i had a JP and it all lined up properly just how it should. i also did nothing but shave down the oil pump cover.
12-13-2011
I wished I had that luck
12-14-2011
Don't feel bad it was just a hangover. I measured my chain and got .9228 from the widest part, the pin holding the links together.
He said ZZP so...
How mine fit too, perfect without modding anything but pump cover.
12-14-2011
I have a Rollermaster I got for $80, still debating if I really need it.
Last edited by MrPoopyButthole; 12-14-2011 at 06:22 AM.
12-14-2011
Cool, that needed chamfer is exactly what most others have found. Once you put it back together, I'd expect that the chain won't hit the pump cover.
Dave..bring the set with you to the RI meet and I'll drop it at the machine shop.
12-14-2011
Just noticed but why the hell does the box say "ecotec" and "except supercharged engine"???
12-14-2011
thats a good one
I don't know
12-14-2011
Ask an Aussie what our motors are calling over there. I bet it's called an Ecotec. On the non-sc part...you got me as well.
12-14-2011
3.8 Litre (Ecotec) Commodore VS
Commodore VT
Commodore VX
Commodore VY
Statesman VS
Statesman WH
Then there is the regular 3.8...
3.8 Litre Commodore VN
Commodore VP
Commodore VR
Statesman VQ
Statesman VR
The commodore VT, VX, VY came supercharged so I'm guessing Holdens ecotec 3.8L is meaning supercharged.
There may be no differences between the n/a 3.8l and s/c 3.8l versions, sometimes they mark up prices on that stuff and the n/a version is always cheaper, like head gaskets.
Last edited by FoSHO99; 12-14-2011 at 02:51 PM.
12-14-2011
I measured the chain and it is 0.928 Inch
12-14-2011
Last edited by FoSHO99; 12-14-2011 at 03:03 PM.
12-14-2011
Ok install the crank to see if it all fits and as u can see now i got 2 MM space between the crank and chain ,so much better than bevore
Now i am only concerned about the oil pump cover
as i showed in a pic bevore i narrowed the oil cover by 0.20 MM and not 0.020 MM
hahahahhahahaha and now i understand ,it was inches and not MM
and 0.020 inches is 0.51 MM
Without a gasket it hits the oil cover and i measuted the space it needs and that is 0.40 mm 0.0157 inch
i will take 1 MM 0.0394 inch just to be sure
with a 1 gasket it sits free but i think its to close
here u can see that the chain is not equal from the engine ,but it is like 0.065 mm 0.0256 inches ,I dont think i need to worry about that
12-15-2011
I know in Matt (Janices) machining, he'd also end up needing to machine about .01" off the cam gear. Wonder if he was taking the crank gear back a little further. I know that after doing it..there was no need to machine the oil pump cover as it would then fit and clear.
12-18-2011
i will take some of from the cover and see from there
12-18-2011
I'm not trying to rub it in or anything but mine fits perfect, first try, even without a single gasket... I checked chain to crank clearance and it looks about like yours AFTER you machined the crank. Just gonna take a touch more off the tops of the two screws in the oil pump cover to play it safe and still probably double gasket it since it won't hurt anything.
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