Originally Posted by Dillon71 (Post 11475410)

modded engine review:
I got my first modded engine from cre in early october. The last two engines Ive ran this year were stock o.s xzb's. I had pretty good luck with those engines as far as reliability, permanence and longevity. A friend of mine got a p5 from cre and that was the first engine I've seen or heard run like that. So i contacted Neal and he advised me to get a ninja b02 given my background with o.s engines.

I broke in the engine like this (similar too werks method):
vp fuel +10% oil for the first 500cc of fuel.
Preheat the engine until engine can be turned over by hand, that way you know the p/s pinch is not putting excessive load on the connecting rod/crank pin/ wrist pin. for me it was 250+comp heater as an insulator.
bottomed out idle screw and opened hsn 1/2 turn, lsn 1/2.
started the engine and tuned the lsn to normal-high idle speed.
idled 1st tank, ran 5 tanks on the ground, with each tank adding a little epa to the throttle, backing out the idle screw and tuning the lsn to maintain idle speed. I also let the engine cool between tanks and preheated it before re-firing.
after tank 6, set the idle gap to .5mm and re-tuned the lsn and ran it on the track, kept the hsn on the rich side and about 3/4 epa, 7mm restrictor.
I ran about 10-12 tanks, the engine had a lot of compression but no metal pinch.

I have a little over two gallons on the engine now and it seems like it runs better and better with every tank. I use a 2058 pipe, buku clutch, vp fuel, 7mm restrictor and o.s p4 plug. Iam getting comfortable 10min runtimes and tempting in the 250-260 range. Still has a lot of compression and requires preheat before every start.

The power band of this engine is perfect. Crisp throttle response, smooth bottom end, strong mid range and incredible top end. And it sounds like a cr500 which is always cool!

I know modded engines have a bit of a reputation of being finicky, but this engine proves the opposite. Easier to tune and more consistent during a race/pitstops than my stock xzb's. I only recall tuning the hsn for a race that was at sea level within miles of the beach and then changing it back when I got home.

One thing ill note is keep an eye on the front bearing, Seems like the higher rpm's causes a little oil to weep out the front bearing after about 1/2 gallon or so. Could be in part due to the vp fuel's low/thin oil content. Depending on your tracks dust levels dirt can/will collect and find its way into the engine. The front bearing is what I consider to be a maintenance item and should be routinely inspected.

I was on the fence about modded engines for a long time but after the performance I am seeing with this engine and the support from Neal and cre i'll never run anything else.

Originally Posted by tmth3 (Post 11473471)

thanks for the advice guys. i need more bottom but im used to a lot of top end also... a little confused. i currently run an o.s. speed vz-b II. and which one is the best on fuel? i get a little under 12 mins in buggy currently. i guess i need the best all-around package. im open to more suggestions than these two also, as long as its not a novarossi.

Originally Posted by tmth3 (Post 11476364)

ok thanks for all the advice guys. the werks b2 is out. was kinda hesistant on the b02 because one of the local buddies (big tim g!) has a clocked ninja in his truggy and that thing is retarded, ballistic fast! that engine yanks that truck all around the track! and since im on the hunt for a buggy engine, i was afraid it would be too much. but then again it would be the easiest transition since im already accustomed to tuning o.s. engines.... bo2 it is. i have a 2060 o.s. pipe. is it a good pipe for the clocked ninja?

Originally Posted by hookem34 (Post 11475704)

Welcome to the club Dillon! It's good to see someone with an OS background actually know how to tune an engine:ha:

Originally Posted by Spads11 (Post 11478925)

Hey now, I resemble that remark!!! Well, I started leaning the "FrankenWerks" B2 (pipe 2058, chassis xb9) that you loaned me. I have to say again, I have tasted a bit of the koolaid and I'm very impressed. Stats for yesterday: Barometric pressure 3029, temp approx 70, 37% humidity. The conditions played a bit of havoc on everyone's tuning, but I resisted making changes during practice. I had plenty of room to lean it out on top and set about tuning after running practice for 3 tanks. Within minutes I had it pulling VERY strong on the bottom and screaming on the top without struggle and was ready to hit the track. I have to admit, my lap times suffered a second or two as I was trying to get used to the huge increase in power and my deer in the headlights stare. At the end of the day my lap times got close to usual and I was just able to reel folks in on the short parts of RCHQ that are open. It ran flawlessly from start to finish and I had made darn sure to reglue my premounts!

Originally Posted by hookem34 (Post 11479186)

That a boy David! You were the first person I met who runs OS and knows how to tune an engine:lol:

Glad you got her into a race and witnessed the power. I had a pretty aggressive clutch setup on that engine, so next time try gearing up or dial in some negative expo on the radio. You can also dial back the throttle EPA.

Now you know my pain with the engine mounts (and premounts for that matter) Red Loctite is your friend:ha:

Originally Posted by Spads11 (Post 11483393)

Yeah, I stripped my buggy down in preparation for my new BCE chassis and had a engine mount screw that was working its way out! Here I come red loctite.

That said, I'm looking forward to running her again in the points series this Saturday and will try to make it out on Friday to run some laps and try my shorter header from my 086 on the 2058. The 58 melted to my chassis guard and I need something a bit shorter w/o killing the performance. Further, I need to get a real read on tank times that I'm able to get once fully race tuned. Definitely looking forward to it!