Houston

I'm new to nitro truggy racing and engine tuning, but have been reading and learning a lot. I have a Plus-4 and tuned it just like that post, a little ways back in this form, said. I found and read the same thing about a month ago. My problem is, when I raced it last, it flamed out. Peaple said that it was to lean. Unfortunatly my temp gun broke and I didn't get a reading so I don't know how hot it got. These are the steps I took with this engine. I waited till I had all most a gallon through it then tried to give it a race tune. I left the high and low needles rich (Factory or richer setting), and the idel turned up. I ran it up and down the street, adjusting the high one hour at a time, till I heard the tone change. Then I started on the low end, one hour at a time until the ideal stayed high and did not ideal down. Then I turned down the Ideal. Looking back, after the engine tune changed, I didn't back the needle off a quarter of a turn. Could this have been my problem? I'm I close to doing this right? What should I do different? Do you think there is a problem or if I damaged the engine? Thanks for all your help.

I hate to be a PITA but does that screw look right? Did you want a pic. of the carb also?

i doubt you damaged it unless you ran it over 325 for more than about 1 min.

usually have to back out the hsn a touch after setting the low speed , you are on the right track though

monty

sorry speed , (now my ass hurts though)

that idle screw looks long but i was gonna go pull one out and check it . i usually dont pull those out just back em out to check the slide barrel .

i will get back to ya in a bit

I Would really appreciate that.....Oh, and here's a cold one to help with the pain.

Houston, I just got my new pipe (Dyna 086) and cant wait to run it! My question, is there a better venture to run with this pipe? I have a plus 21-5k and it currently has a 8mm in it. Man I sure hope to see an improvment over the JP-4 pipe I was running.

8mm is good , if you still have horrible runtime , try a 7mm and add .10mm shim on underhead . the engine will feel much better though

Whats the difference between the Ofna 086 and the Dynamite 086?

I have the Plus 4 and love it. Had a P5XS before it and loved it too. I'm looking for a good pipe for this engine with the best runtime.

best performance and runtime
no budget - 9853 / 41001 or 41005
budget - ofna 053 out of the box have a couple available

crazy power - 9886 w/41020 or 41021
budget - ofna 086 w/ novarossi 41020 or jammin header


the dynamite pipes are close in performance , what they lack in performance they make up in durability

I need to get a 9853 pipe to pair with my 41005 header, then I'll grab a 41021 header to pair with my 9901 pipe

i think i have one , but not sure yet 9853 that is . i know i have 41020 couldn't find 41021 i thought i had

you must ask


stay cool

Thank You.

Do you have a 41021 header by chance No seriously, that would be bada$$ bro........thanks Monty

no prob king

Houston, glad to see your helping us out. Not to long ago you gave me a tip to check that I don't have some bad RB plugs. I changed and have been happily running since. SOOO much headache relieved. Thanks, and keep up the good tips!