Double roller timing chain clearance question
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From: >>>_FRISCO_MUSCLE_<<<
Double roller timing chain clearance question How do you make clearance between the double roller timing chain to the front cover? Will double front cover gasket work? I know it works on a supercharge V6 car like the Grand Prix
I'm in the process building a new motor so I need to know if I need to get a single timing chain. Thanx
I'm in the process building a new motor so I need to know if I need to get a single timing chain. Thanx
You cant double front cover gaskets these cars, I have never heard of anyone doing that. I have the rollmaster double, and what a complete pain in the a-- it was to fit. the way it works is there are spacers that mount behind the oil pump housing, which allows the chain to clear the back of the pump, this pushes the pump forward and into the cover, (I have heard of some guys who did not have to clearance their covers) I did, quite a bit. What I did was took some DYKEM, spray paint will work fine, and put a light coat on the inside of the cover, then tried to mount it, and when it didnt go flat, I turned side to side, which makes scratches in the paint, showing where it is contacting. Then using a die grinder with a sanding wheel I removed matierial until it fit without contacting, It took multiple times of mounting, removing, grinding, mounting, removing, YOU get the point. There are a ton of post showing where most have to remove. It was not hard, just time consuming. When you do this, do not do it with your new front seal in the cover, as it will get damaged. Hope this helps.
Dont try to gain any clearance by runnign without the oil pump spacers, and removing matierial from the oil pump..I tried an experiment and ended up ruining my brand new melling,, Its worth the read
https://ls1tech.com/forums/generatio...xperiment.html
Dont try to gain any clearance by runnign without the oil pump spacers, and removing matierial from the oil pump..I tried an experiment and ended up ruining my brand new melling,, Its worth the read
https://ls1tech.com/forums/generatio...xperiment.html
Last edited by RARON455; Apr 16, 2011 at 09:43 AM.
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Going through the same stuff right now. There are a few aftermarket covers out there, but they need clearancing as well. Remember you have now shimmed out your ballancer as well. You will have to machine that down to make your accesories line up correctly. This must be a common problem, wish I knew before I mounted my double roller.
Going through the same stuff right now. There are a few aftermarket covers out there, but they need clearancing as well. Remember you have now shimmed out your ballancer as well. You will have to machine that down to make your accesories line up correctly. This must be a common problem, wish I knew before I mounted my double roller.
IF I had it to do over again, I would have went with the LS2 roller everyone says is so much better, The double roller really was a pita for me.
You cant double front cover gaskets these cars, I have never heard of anyone doing that. I have the rollmaster double, and what a complete pain in the a-- it was to fit. the way it works is there are spacers that mount behind the oil pump housing, which allows the chain to clear the back of the pump, this pushes the pump forward and into the cover, (I have heard of some guys who did not have to clearance their covers) I did, quite a bit. What I did was took some DYKEM, spray paint will work fine, and put a light coat on the inside of the cover, then tried to mount it, and when it didnt go flat, I turned side to side, which makes scratches in the paint, showing where it is contacting. Then using a die grinder with a sanding wheel I removed matierial until it fit without contacting, It took multiple times of mounting, removing, grinding, mounting, removing, YOU get the point. There are a ton of post showing where most have to remove. It was not hard, just time consuming. When you do this, do not do it with your new front seal in the cover, as it will get damaged. Hope this helps.
Dont try to gain any clearance by runnign without the oil pump spacers, and removing matierial from the oil pump..I tried an experiment and ended up ruining my brand new melling,, Its worth the read
https://ls1tech.com/forums/generatio...xperiment.html
Dont try to gain any clearance by runnign without the oil pump spacers, and removing matierial from the oil pump..I tried an experiment and ended up ruining my brand new melling,, Its worth the read
https://ls1tech.com/forums/generatio...xperiment.html
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If you just buy an SLP oil pump and the SLP double roller timing chain, it won't need to be clearanced at all. That's what I did. Shortblock is sitting in my garage right now, with the oil pump, double roller, and front/rear covers and pan installed. Shop that installed it called me asking about the spacers. I told them it didn't need them and to slide it on and check the clearance. They put me on hold, came back 5 minutes later, and expressed their surprise/relief that it didn't need to be clearanced nor did it need spacers.
Oh yeah, congrats on upgrading to a V8. I bought some part(s) from your black car when you parted it out.
Oh yeah, congrats on upgrading to a V8. I bought some part(s) from your black car when you parted it out.
^^^ Absolutely correct. Buy the SLP ported pump, and you can use about any double roller. I used a Comp Cams double roller. You do NOT use the pump shims with this pump. The inside of the pump is clearanced for the double chain. Going this way is as easy as any single roller.
CHRS1313...I don't want to start an argument, but why are you machining your balancer? That has nothing to do with the placement of the pump. The balancer fits against the lower timing gear/pump drive. That gear doesn't move I don't care how far you move the pump. It's part of the timing set...not the oil pump.
Don't machine the balancer. Then you will have issues.
CHRS1313...I don't want to start an argument, but why are you machining your balancer? That has nothing to do with the placement of the pump. The balancer fits against the lower timing gear/pump drive. That gear doesn't move I don't care how far you move the pump. It's part of the timing set...not the oil pump.
Don't machine the balancer. Then you will have issues.
^^^ Absolutely correct. Buy the SLP ported pump, and you can use about any double roller. I used a Comp Cams double roller. You do NOT use the pump shims with this pump. The inside of the pump is clearanced for the double chain. Going this way is as easy as any single roller.
CHRS1313...I don't want to start an argument, but why are you machining your balancer? That has nothing to do with the placement of the pump. The balancer fits against the lower timing gear/pump drive. That gear doesn't move I don't care how far you move the pump. It's part of the timing set...not the oil pump.
Don't machine the balancer. Then you will have issues.
CHRS1313...I don't want to start an argument, but why are you machining your balancer? That has nothing to do with the placement of the pump. The balancer fits against the lower timing gear/pump drive. That gear doesn't move I don't care how far you move the pump. It's part of the timing set...not the oil pump.
Don't machine the balancer. Then you will have issues.
make sure to check the snout OD so that it is still smaller than the ID of the pump gears...when it is shimmed they now stick out farther than the crank gear...so your snout should have a taper, just make sure there is still enough clearance...
That is an excellent point that is easy to overlook!
Staging Lane
Joined: Sep 2007
Posts: 99
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Sorry, not trying to hijack your thread but is this a problem with all double roller timing chains? I just ordered a comp cams double roller with a melling HV oil pump for my cam swap.
These two parts here:
http://www.thunderracing.com/catalog...ywords=63-7102
http://www.thunderracing.com/catalog...ords=156-10296
Is this going to cause an issue?
It's going in a 99 C5
Thanks,
Josh
These two parts here:
http://www.thunderracing.com/catalog...ywords=63-7102
http://www.thunderracing.com/catalog...ords=156-10296
Is this going to cause an issue?
It's going in a 99 C5
Thanks,
Josh
Sorry, not trying to hijack your thread but is this a problem with all double roller timing chains? I just ordered a comp cams double roller with a melling HV oil pump for my cam swap.
These two parts here:
http://www.thunderracing.com/catalog...ywords=63-7102
http://www.thunderracing.com/catalog...ords=156-10296
Is this going to cause an issue?
It's going in a 99 C5
Thanks,
Josh
These two parts here:
http://www.thunderracing.com/catalog...ywords=63-7102
http://www.thunderracing.com/catalog...ords=156-10296
Is this going to cause an issue?
It's going in a 99 C5
Thanks,
Josh
Staging Lane
Joined: Sep 2007
Posts: 99
Likes: 0
Eh... I think I'm just going to go with the LS2 chain with my HV Melling oil pump then, don't really want to run into issues mid install.
From what I've seen as far as reading other threads is there will most likely be clearance issues, you can use button head bolts for the pump and do a little grinding but I really don't want to mess with that.
Really doesn't seem like there is any worthwhile reason to run a double roller, looks like a lot of really high power cars are running a single without second thought.
I'm thinking I'll go with the LS2 chain myself but the C5R looks like a popular one was well, although pricey.
From what I've seen as far as reading other threads is there will most likely be clearance issues, you can use button head bolts for the pump and do a little grinding but I really don't want to mess with that.
Really doesn't seem like there is any worthwhile reason to run a double roller, looks like a lot of really high power cars are running a single without second thought.
I'm thinking I'll go with the LS2 chain myself but the C5R looks like a popular one was well, although pricey.
