same engine as p5 with a jp crank , if its an old one it probably does not have the coated crank pin (bummer), that crank will last literally forever . turbo is kind of a mixed review with me , every engine is different (minisculy) so it is not always an improvement but when it is it is :nod:

he hated the p5 engine ? wtf? the p5 is a badass engine that is very tuneable in every way :nod: pipe , plug and clutch .
hope you're happy with the engines ,
monty

more abrupt bottom , but good ;)

whats a good pipe for the 421B ? also whats a good one for the 821b ?

I am running a powerhouse turbo mod GRP tuned (great engine) I find it performs best with the dyn 053 pipe, the GRP 2053 is flat and the Trinity bad boy pipe is horrible. Do you have any experience with the Trinity bad boy pipe? and can I get more performance out of a different header with the dyn 053 pipe other than the dyn stock one. I am running in an 8T 2.0. Thanks for your input.

Monty are the new Plus 4's coming with Turbo Button, or still sold separately?

21-5k
 

hi Monty, i was wondering what is the right head shimming for the 21-5k running 30%,it has 2 silver shims that are kinda thick and a thin copper one,this seemed kinda thick to me.Also what is a good start needle settings. Thanks for your time and knowledge.

i recommend a short square header , balances the pipe out while still maintaining exc. run times and instant bottom end

the new ones come with both combustion chambers in the box . 325$

comes w/ 2 .30mm alu. and 1 .10mm copper shim . add 1 more .10mm and it will run a little better . total of .80mm ;) be careful not to over torque the head when you reinstall , you can warp the block and the engine will never run the same . use a criss cross pattern and tighten in small increments ;)

When I first met Monty I was running a GO. He tried everyting to get that POS to hold a tune................no luck. HE then gave yes I said gave me a nov carb to try to fix the problem. No luck... To help out for the race Monty let me borrow a mill. I had zero problems after that..oh accept for my driving:sweat:

This guy is true and is real. I bougfht a Monty tuned P and will never buy anything but Nov from now on. And yes I'll buy all my race mills from You brother. Glad I met you last summer:tire::tire::nod:

GOOD PEOPLE!!!!!!

thanks jason

hopefully we get to race soon :nod:

GOOD PEOPLE!!!!!![/QUOTE]:nod::nod:

Yes Monte is a great person, but people implies 2 or more.:nod:

We all know theirs only one of Monty.:lol::lol:

Nice thread. Good to see people getting great help from someone who knows a few things about these little engines. Keep up the good work.

hey monty, when are these coming out? u got me convinced to try the plus 4 when i get on my feet

they are in my engine room now . :nod:

:nod::nod:

Yes Monte is a great person, but people implies 2 or more.:nod:

Hey Hal.... you never heard this saying growing up?

It means he comes from Good Stock. Good Family. Good Friends.

He Is Good People.;)

Pm sent...you know you wanna help me out!:nod: