um , its top secret , its an excellent design is all i can say

i love the p5 line of engines , have gotten me many wins and have always ran good unless i did something to change that user error

Sorry for the repost. I am in need of some help. I have a hot mods plus 21-5k and would like to know the best pipe, header and plug for this engine. I have a JP-4 will this work? New to the 1/8 buggy world. Thanks again for any help. Great thread

The JP manifolds I have are packaged as conical and are completely different from the parabolic which is C shaped. They are shaped like boomerangs, that's the closest resemblance I can give. I tried mounting them on once but the just place the pipe so much closer to the fuel tank and it looked pretty sketchy.

My motor and other part showed up today. Thanks Monty!

My friend has a Fantini modded max power. Think it's an M5. It's a turbo head. He installed the back plate wrong and broke the piston skirt. What p/s/r can i use in the engine? I believe it's based on the P5 nova. I thought i read where someone put a 421/821 p/s in a P5. We would like to make a strong runner out of it. Also do tko's work well front and rear? Novas have too many different designs, OS much simpler. Just taking a fun poke at ya!

Conical headers use various length and tapers to alter velocity of the pulse and also the strength of the returning pulse to the chamber. The additional curves in the pipe also alter back pressure usually creating more giving the engine a broader tuning band creating a user/tuner friendly engine. The various lengths will obviously determine the time, distance and strength of the return pulse and depending on the port timing of the engine will determine what type of powerband characteristics the engine will have. The longer headers will generally give more torque at lower rpms and the shorter headers will give the engine less torque down low but with an increase of peak rpm. You also have to be aware of the tuned portion of the pipe because you can arrive at a similar conclusion with different combinations. For example: a pipe with a very long header and a small volume tuned pipe with a short expansion chamber(GRP 2053) will tend to run very similar to a pipe with a little shorter header but longer expansion chamber (053). Now a pipe like the JP1 with a medium length header and one of the biggest volume, longest expansion chambers available will make the most torque but operate at a lower rpm. If you raise the port timing and give the engine enough exhaust area, the added volume will be beneficial as the engine will produce the most power possible with a huge torqueband and even though the exhaust blowdown is increased, the pipe will still support the changes.

you will never go wrong with 86 or 53 versions of pipes such as novarossi , ofna , dynamite . any pipe will work on any engine but that doesn't necessarily mean it will make the most power possible . i have noticed the jp4 to be a little lack luster in the power range on novarossi engines . they are an efra legal pipe which means they are basically silencers

truggy ofna pipeset 053 out of box
buggy dynamite 086 out of box
great out of the package pipe combos

the m5 is a p5x , you can use 08036 , 08038 p/s sets yes . 08038 will definitely give you more power


tko ceramic cb-mr25814 and cd-607c-2rs , those are the bearings you want

tried a werks header of that style and for some reason no engine liked that header with 4 different pipes .

havent found a good pipe combo for that header but when i do i will let you know


excellent mark , now in english jk

happy motorin',
monty

i was going to post this in the appropriate thread but i would have waited to hear houstons reply before i made my choice he seems to have nearly tried and played with every combo possible so im after some info on the new 3005 pipe line and how it would compair to the 9901 on both the Toro and +4 now im after what would be smoothest and most fuel efficent pipe for both those motors i just picked up a Toro Neo yesterday for me 5Tand plan to get the +4 for me 5R very soon, so best pipe combo for economey and best power setup would be much appreciated

+1 on the 9901 info. I talked to Chris Nunez at Fusion Motorsports and he says that the 9901 delivered good results. I just don't remember which header he said to use. I have the pipe but I really like how the 9853 + short header combo works.

Houston, Thanks for the reply. I just ordered the 086 pipe set Is there a good plug that works well with this motor? Thanks for all the help. Any other info on the motor you think would be informative would also be great!!

i havent tried every combo under the sun but i have tried a few as far as the 3005 goes , i believe those are efra legal pipes and are in the silencer dept.? not always the best in performance but if you need efra legal in australia then its probably a good pipe for ya . 3004 , 3005 i believe are to be modeled after the 9901 pipe . 9901 worked good w/41005 or 41020 .

9853 setup is excellent . 9886 setup is crazy powerband but fun as hell