vacuum pump ?

what is your target % of vacuum you guys are set up for ? and do yall use the #10 line to the pump or #12 ?

i do 10"with a wet sump deal.i have a #12 line, i think........

cool40 wrote:i do 10"with a wet sump deal.i have a #12 line, i think........

and is that pretty common on a wet sump deal ? or is there other factors ?

12 here, old moroso 3 vane, single -12 to pump. I do run an external oil pump and can adj oil press as needed also.

Im i going to notice a change in oil pressure ?

You probably won't see any change in oil pressure. It's just nice to be able to adjust the pressure with an external pump.10lb of vacuum is about the max with a wet sump ,so Mr. Kasse told us.

bruno wrote:Im i going to notice a change in oil pressure ?

, it can affect it, 12 or less shouldn't bother it enough to worry about.

I use 10" of vacuum, #12 line, star racing sportsman pump, no oil pressure problems. I use hose with a wire coil in it as well, had regular hose collapse.

cool40 wrote:i do 10"with a wet sump deal.i have a #12 line, i think........

X2

depending on how good the engine the engine is sealed anything over 12 on a wet sump can affect oil presser, below 10 there never seems to be a problem, we aim for 10/12.

3 vane works well with a wet sump, just make sure you have a vac valve installed to keep in check, too much and it will pull oil off the wrist pins etc.

bruno wrote:Im i going to notice a change in oil pressure ?

i ran mine without the v/p and then with it and saw no change.

if the pump is set up for #10 we run 10,set up for 12 we 12. some are different

AL Q wrote:I use 10" of vacuum, #12 line, star racing sportsman pump, no oil pressure problems. I use hose with a wire coil in it as well, had regular hose collapse.

im going with the black push-loc style hose , hopefully that will be ok

does anyone have a pic of there mandrel setup on there crank trigger wheel ??

A lot of racers like the "Star" pumps, (they have three different ones I think). I use the pumps from "G Z Motorsports" on some engines I build, (they have three different main size pumps offered with different inlet/outlet positions), and with about more than 11 inches of vacuum in the crankcase you will notice a definite need for more wrist pin oiling and greater wrist pin clearance; either that or check 'em more often and you'll find that condition during a freshen-up. Hopefully BEFORE any damage. DLC type coating the wrist pins helps greatly.
I use a -12 hose preferably to the valley.

rmcomprandy wrote:A lot of racers like the "Star" pumps, (they have three different ones I think).

Yes Star has their Sportsman (for small blocks and mild big blocks), the Standard (mine and in the pic above) and the Mountain Motor pump.

I think they work great. Don't know I mentioned it in my build/dyno thread last spring, but the Standard pump with the relief adjustment set just about in the middle of the range pulled 16" on my 598 when we warmed it up on gas on the dyno. Since it was a wet sump we didn't try any higher. When we swapped the gas carb for the alky injection the vac dropped to 10" at WOT. Pulls 6" at idle with the injection. I have since adjusted the relief just a touch for about 1" higher. 11 and 7.

I'm using -12 hose from 1 valve cover with Star's baffled v/c fitting. With the relief valve on the pump instead of a v/c it doesn't pull hardly any oil. Maybe 3 ounces all last season.

Whose mandrel is that? Peterson?

Barney wrote:Whose mandrel is that? Peterson?

Ron's Fuel Injection mandrel and pulley setup

Thank you for the pics guys ......... to me it looks like on David's deal the drive is mated( via 3 bolts ) to the dampner looks like a better deal ? or im i missing something in Jon's pic .....

David Cole wrote:

rmcomprandy wrote:A lot of racers like the "Star" pumps, (they have three different ones I think).

Yes Star has their Sportsman (for small blocks and mild big blocks), the Standard (mine and in the pic above) and the Mountain Motor pump.

I think they work great. Don't know I mentioned it in my build/dyno thread last spring, but the Standard pump with the relief adjustment set just about in the middle of the range pulled 16" on my 598 when we warmed it up on gas on the dyno. Since it was a wet sump we didn't try any higher. When we swapped the gas carb for the alky injection the vac dropped to 10" at WOT. Pulls 6" at idle with the injection. I have since adjusted the relief just a touch for about 1" higher. 11 and 7.

I'm using -12 hose from 1 valve cover with Star's baffled v/c fitting. With the relief valve on the pump instead of a v/c it doesn't pull hardly any oil. Maybe 3 ounces all last season.

why does the vacuum drop with the injection ?

bruno wrote:Thank you for the pics guys ......... to me it looks like on David's deal the drive is mated( via 3 bolts ) to the dampner looks like a better deal ? or im i missing something in Jon's pic .....

No it's not mated. Te 3 bolts just hold the alt pulley on. The pulley is a bbc part from East Coast Auto Electric.
My combo was sort strange.
Short Boss 429 crank snout
SBF damper from ATI for the Boss snout
BBF crank trigger
BBC alt pulley
Ron's BBF mandrel.

To mate them all and keep them centered properly Keith Fulp made me a little billet adapter. Besides centering it all when you tighten the 3 pulley bolts it causes the adapter to clamp down on the mandrel. Works great. But, I have also ran the Ron's mandrel with only the center bolt for years with never a problem. Little LocTite, lock washer and proper torque.

bruno wrote:
why does the vacuum drop with the injection ?

Not sure, but it IS expected. At least that's what I've been told by both the injection experts (James Monroe) and by the guys at Star that made the pump.
Prob has somenthing to do with fuel volume. But it IS NOT blowing by the rings and getting in the oil. My oil stays clean and looks great. At any rate he guys at Star told me mine was doign great. For a wet sump 598 to hold that much with their Standard pump and injection it was sealed up well.

completely understand David , thank you for the pics.