Is shorter pushrods usually needed? I have 1.5 now and going to 1.6 Thanks. Kim
Not exactly. The shorter pushrod may be needed because of the contact point on the rocker arm. That’s what I think Kim is thinking. You still get the lift extra Benefit.I could be wrong, but I think the 1.6 ratio is to add to the cam lift. Shorter pushrods kind of negating the 1.6 ratio advantage.
There is no universal answer, you have to install the new rockers and make a measurement. If you are staying with the same brand of rocker and they were built at roughly the same time then maybe the pushrods will be the same but I wouldn't bet on it. If you are changing brands then almost guaranteed that you'll need different pushrods.Is shorter pushrods usually needed? I have 1.5 now and going to 1.6 Thanks. Kim
That’s right Rumble. I have new Smith Brothers pushrods that they made too short. I sent them 1 from the motor so they could make an exact match. But that didn’t happen. I have 4-5 threads under the rocker. I only had 2 b4. I have 1.6 rockers to try. If no difference I’ll give Manton a try. Kim
That was my experience with them. I told them what I wanted and they gave me a set 1/8 smaller than I told them over the phone and have refused to resolve the issue. Hope you can get them to resolve it Kim.Rumble, I called them multiple times to no satisfaction. They didn’t help nothing. Didn’t care. This was in July 2017. My race car has sat since then. I’ll never buy from them again or recommend them ever to anyone. Kim
I am done with them. Even their shipping was crazy to ship to ND. KimThat was my experience with them. I told them what I wanted and they gave me a set 1/8 smaller than I told them over the phone and have refused to resolve the issue. Hope you can get them to resolve it Kim.
J.
Different brand means you'll need to mock it up and verify the length. There is no way to know until you measure it.Andy, they are a different brand. I’m hoping they need a shorter pushrod. I would like to get back to 2 or 3 threads showing. Kim