hi guys..

planning to buy a new engine..appreciate if you guys can give any input in this.
got a deal with LHS clio p5 and plus.21 4btt wc about the same price.
which one should i go with?..thanks

If it were me I would do the Clio and have it modded. I love my modded p5. It just as fast as a o.s speed on the straits but still tons of torque for all the infield stuff. My btt was really good too but love the modded p5

Agreed. And Modded p5's by Clockworks are awesome!! And can't go wrong with a werks 2058 pipe on it either!! Man...what a combo!! Neil was right!!

Yes sir!!

I don't know about clockworks. Around here its murnan and Houston engines. As far as I know I'm the only RB mods in my area. I use the 9901 pipe and it has worked well so far.

hey guys, i have a keep off plus 4 .21 and seems that air is getting in and i can't tune it! I have noticed that when on throttle the tuning is ok and off throttle the engine gets lean... I try a lot of different settings on the carb , resetting the needles, try again, have my buddies check on it again in order to exclude the possibility I'm doing something wrong.

Front ball bearing is changed recently and i'm pretty sure that it's air insulation problem. Anyone having experience with this ? What i can do and what to check?

Well, there is only 4 different spots where air can get in to a engine. 5 if you count where it is supposed to come in

Make sure everything is tight. Screws on the back plate, carb pinch bolt and head bolts.
If all those are tight, you may have a pinched of cut o-ring. Back plate, pinch bolt O-rings ( one or both sides) carb o-ring.

Make sure the head is sealed properly ( not cocked off to the side/ it is sitting flush all around).

Fule lines, tank and lid seal, exhaust gaskets ( both) pressure line to the tank

Could possibly be another bad front bearing.....

Or the carb is the issue. Something in it, slide not sealing, main needle and housing ( loose or cracked) as well as the O-rings on the needles...

Do you have any oil/fuel leaking or pooling.....

The clocked p5 with a 2058 just does everything great. Its my favorite setup. I have several other engines and that combo is most used.

Thank you for your valuable help. I will give it a try and check again..

Hey Houston,

A while ago, some thread I dug up from 2013, you posted your recommendation for pipe/header for the P5XLT as below:

Is this still your recommendation for the best header/pipe combo for the P5XLT?

Thanks!

While we're on the subject of pipes and headers.....

What's a good combo for the p5xlt in a truggy? I've already got the 2096/41021 and was thinking about picking up something else for a little variety.

How does the Dynamite 086 pipe set work? It's kind of tempting for 50 bucks. I'm not sure what manifold it comes with but it looks similar to the 41021.

I'm not Monty nor will I ever claim to even know half the knowledge he has about nitro engines and their inner workings and how to improve on them...but the 41021/2096 is a very good if not the best race legal compo for a P5 in buggy IMHO. Smooths out the bottom end on the P5 and gives it a nice crisp mid to top end power band. It also allows you to lean the HSN a little more then other pipes so fuel mileage will increase as well. I have seen a Full Monty P5 on the 41021/2096 in a MBX6 for 13:27 on a tank with a smooth driver.

I was running the Nova 9886 SS / 41021 in my buggy with the P5XLT. Seemed to work fairly well, but the pipe got a dent, so I thought I might try something different.

Hey guys, opinions on crankcase caps? Are they really necessary? Can't I keep all dirt out of my engine if everything is run properly and cared for, without one of these caps? If its highly recommended, can I just install the cap and be done or do I HAVE to seal it up with sealant? Seems foreign territory at this point.

There really arent too many engines, if any, that I would rather run than a P5 or a close relative to it It really is an excellent buggy engine and would be the best if it had more top end. So def get the Clio and have it modded if you really want to go crazy. Nothing is a stump puller like the good ol' P5.