Schubek Lifters

brent flynn · 04-26-2013, 09:18 PM

Quote:

Originally Posted by Alan Roehrich

Not knowing your combination as I do ours, I really can't say. I got a lot of help from fellow racers and fellow engine builders, as well as cam grinders to find what our combination likes. You should speak with your cam guy, and with people running similar combinations. Some engines that run at a lower RPM use more aggressive cam lobes, and still need as much spring pressure as higher RPM engines.

THanks...Im gonna call Chris @ Comp and give him my combo( i have a comp cam) to see what he says about it...im sure he can help me... I appreciate the responses...

Alan Roehrich · 04-26-2013, 10:37 PM

Quote:

Originally Posted by brent flynn

THanks...Im gonna call Chris @ Comp and give him my combo( i have a comp cam) to see what he says about it...im sure he can help me... I appreciate the responses...

Chris will give you good advice, he is one of the best guys to deal with for Stock and Super Stock cams and valvetrain.

brent flynn · 04-30-2013, 09:50 PM

Any reason to run restrictors , with Smith Machine lifters?

04-30-2013, 10:48 PM

Yes to keep the oil in the pan and going to the mains and rods., especially with roller rockers. SOP with 400's in our deal

Quote:

Originally Posted by brent flynn

Any reason to run restrictors , with Smith Machine lifters?

carl hinkson · 05-01-2013, 05:58 AM

Quote:

Originally Posted by brent flynn

Any reason to run restrictors , with Smith Machine lifters?

Are the oil feed holes on the side of the lifter and not in the oil band if so they are all ready restricted no need to use restrictors.

brent flynn · 05-01-2013, 06:27 AM

Quote:

Originally Posted by carl hinkson

Are the oil feed holes on the side of the lifter and not in the oil band if so they are all ready restricted no need to use restrictors.

I dont know where the oil feed hole is, yet, as the lifters are being made...itll be 3 weeks, or so, before they get here... Thanks!

bob3240 · 05-01-2013, 07:43 AM

Brent, It's not so much the oil hole location as the oil groove relief in the lifter. On a Pontiac block the relief is very close to the. bottom of the lifter bore, allowing oil to escape. I believe some bearing problems I had were related to this condition. So, I would use the restrictors I think he machines the lifters to work in Chev & Pontiac both. I have the Schubecks in both cars, 180# @ the seat, 6200 through traps, no problem yet! Good luck! Bob Michael.

.

brent flynn · 05-01-2013, 11:06 PM

THanks Bob... im hearing the same thing from Todd Hoven, as well... gotta keep the oil in the mains...

04-30-2013, 09:50 PM	#3
brent flynn Senior Member Join Date: Apr 2011 Location: Middletown, IN Posts: 593 Likes: 0 Liked 0 Times in 0 Posts	Re: Schubek Lifters Any reason to run restrictors , with Smith Machine lifters? __________________ 1968 Bird/TRW 455/Home ported 13's, '70 Qjet,Holley Street Dominator manifold, Comp Solid FT, 10.817/122.30/1.440 Workin' on E/SA combo 3119 E/SA

05-01-2013, 07:43 AM	#7
bob3240 Member Join Date: Jan 2009 Location: lebanon ohio Posts: 251 Likes: 3 Liked 16 Times in 5 Posts	Re: Schubek Lifters Brent, It's not so much the oil hole location as the oil groove relief in the lifter. On a Pontiac block the relief is very close to the. bottom of the lifter bore, allowing oil to escape. I believe some bearing problems I had were related to this condition. So, I would use the restrictors I think he machines the lifters to work in Chev & Pontiac both. I have the Schubecks in both cars, 180# @ the seat, 6200 through traps, no problem yet! Good luck! Bob Michael. .

05-01-2013, 11:06 PM	#8
brent flynn Senior Member Join Date: Apr 2011 Location: Middletown, IN Posts: 593 Likes: 0 Liked 0 Times in 0 Posts	Re: Schubek Lifters THanks Bob... im hearing the same thing from Todd Hoven, as well... gotta keep the oil in the mains... __________________ 1968 Bird/TRW 455/Home ported 13's, '70 Qjet,Holley Street Dominator manifold, Comp Solid FT, 10.817/122.30/1.440 Workin' on E/SA combo 3119 E/SA