Just picked up a brand new keep off 4 , have a few pipes I can run , jp3 , a 053 and a 2096 with a dent an 41021 header , what's the recommended pipe ? I have read some good things on the 053 on the keep off , thanks !

I personally like 2058 with 7.5 venturi

053 and get a 41001 manifold........use the 41021 is your on a slippery track and use the 41001 if your on a bigger track and want more giddy up

I picked up and Roma .25 7 port for my truggy what pipe would you guys recommend for thi motor?

you can pick what you want of course but when i was testing the engine when it first came out i was most happy with 9853ss 41021 , double bent headers like 41001 41019 41005 etc were a bit too much power to race with imo

hope this helps

New P5 is out. Went back to a cast piston. Has a filled crank though.

i got a roma .25 in a deal on the forsale thread. it came with one of the screws locked with out a slot for a screw driver on the back plate and some engraving on the mounting edge a team motor i think anyone seen this before??

That sounds like a teamdriver engine.

i can see also that they have some done some work at the back plate like the older novas ,,different work ,.....i would like to see if they also worked litle more at porting and the volume of the crankcase,compared with the older p5 xlt

According to the part numbers its the same old p5 crankcase. The sleeve appears to be the same too. The new 85007 crank probably makes the biggest difference. I'd assume it's just a filled 15007, which would mean it has a larger bore and a little more timing than the 15009 crank the used in the older p5xlt.

Opinions on using p3 glow plug on a p5xlt

To hot

If really wan to use os plug, p4 is preferable p3 too hot n wont last

Has anyone of you guys had any experience with this mill?I know...I know...it's not a $400.00 mill and the fastest the on earth.I'm a sport racer and have had a lot of luck with more budget mills.just found this gold head, standard plug with a pipe for a little over $100.00.any help would be appreciated.thanks

What are you wanting to do with it? Zip up and down the street, or race competitively?