TP heads different from S&S heads?

joker78148

Member

Jul 27, 2011

#1

Question is does anyone know if the TP Eng. heads bolt pattern is different than the S&S heads? I'm calling TP Eng. tomorrow but was wondering if anyone here knew?

I have a 107 TP Eng. motor and purchased the TP Eng. Pro Vent Rocker Boxes. I took it to a shop to get some work done to my bike and was gonna have them put on at the same time. Shop told me those wouldn't fit they were for Twin Cam motors and mines an Evo. Well I bought them on ebay and am stuck with them. Was gonna sell them to someone with a 05 Dyna with a twin cam motor but when I took the rocker boxes to his mechanic he told me they were for Evo motors. So now I'm really confused so I took them to my Big Dog dealer where my bike is getting work done and ask them if they can identify if they are for Evo or Twin Cam? All packaging of gaskets and hardware I have say Big Dog. Service guy tells me all the S&S motors Big Dog used were evo style. So he goes back to my bike with the TP rocker boxes and comes back saying the bolts didnt line up.

joker78148

Member

Jul 28, 2011

#2

In case anybody was wondering I talked with the tech at TP Eng. today and he answered my questions. Turns out the rocker boxes I have are for the Twin Cam 99-up Harley motors or the S&S 117 motors that come on 04,05 Big Dogs (not exact on those years). He told me to get the head gasket of the twin cam and line it up with the provided gasket and all the holes would line up. Once I found this out I called the mechanic of the guy with the 05 Dyna and explained to him what TP had told me and he still refused and tried to explaining to me that those were for an Evo motor. He said even if the gaskets line up they still wouldn't work on the Dyna. He went on to say he would bet $100 that those wouldn't work.

BBChopper

Supports 2 Disabled Vets

Troop Supporter

Jul 28, 2011

#3

05 and up 117 S&S use twin cam heads on an EVO motor.

joker78148

Member

Jul 28, 2011

#4

Thank you for that info I was not aware of that. It's funny yet a pain in the ass trying to figure out some things. I've also found out that the degree of the heads on a TP is narrower than that of S&S or Harley. I was trying to get a different intake and none were lining up with my breather holes.