Shock Tech Q&A

[PenskeShocks]

Please post any shock related questions. Penske Shocks is making a big push into LateModels and our techs are here to help you with any shock related questions or comments...we will have 2 technicians in Knoxville next week, we will be working with Scott Bloomquist, come by and see us.

[37mod]

if the 5th coil shock has to an extreme amount of rebound will it cause a push on a momentum track by not letting the front settle?

[PenskeShocks]

Definitely, we typically run very little to no rebound on the 5th. Generally the 5th is a great shock to control on throttle grip.

[racin6mod]

how much to rebuild a lr gas shock mine has a ding in the shaft and a leaking seal.

[zeroracing]

What is the biggest mistake or false trend that you see late model racers doing?

i.e. Too high rebound one wheel, too low compression, vise versa, gas pressure mistakes...

[JR. MECHANIC]

Definitely, we typically run very little to no rebound on the 5th. Generally the 5th is a great shock to control on throttle grip.

Are you sure you two are talking about the same shock.... I believe he is asking about the shock on the lift arm.... Typically 3 compression, 3-7 range on rebound depending on track condition. It looks like penske is talking about the damper on top of the housing.....

[37mod]

I was referring to the shock on the lift arm.
thanks for the reply.

[stevo]

Bloomquist runs a shock on top of the rear end,feels like 90/10 but most don't so if most don't run one on top should the 5th coil be higher number rebound,if not will car not be loose?

[JR. MECHANIC]

Stevo, adding more rebound to the 5th coil shock will tighten entry. One cannot say that if you don't run a top shock, that you have to add more rebound to the 5th coil. Let the stopwatch determine that.

Brandon Dierlam
MBR (mark bush racing)
Shock guru

[stevo]

I was think they did the same thing,

[JR. MECHANIC]

Simplying adding a 90/10 will tighten entry also

[stevo]

So is this doing the same thing? Adding rebound on 5th as putting 90/10 also some say anything on rearend takes away drive,and how did Bloomquist do with these shock guys i see there not here anymore.

[JR. MECHANIC]

You see who isnt here anymore? The only way a top shock can take away drive is if there is rebound control or it is topping out under acceleration

[mab475]

I believe he is referring to Penske Shocks. They started the thread wanting questions from everybody and has only been on once since. If this is any indication of their service then I'm sure guys will just stick with what they have and the shock guys they have.

[PenskeShocks]

Guys, sorry I haven't been on lately.. At Knoxville currently. I will post back to all your questions Monday..As for the rebuild..$50 per shock, includes post Dyno, new shims, oil, and seals...