Hey
 

Most likely the low end will need to be leaned slightly. The low end is very sensitive and needs small adustments. but make sure the idle gap is not too big first. Drop the idle a little, then lean the bottom a little, then put the top flush. What brand truggy? Going by gearing depends on the truck, but most likely the gearing is fine. The clutch may be fine, but may not be. I would use lighter springs. If I remember correctly the .9's were the ticket with the M2c 4 shoe, the yellow ones anyway.

When the top is lean the bottom ends up slightly rich and the engine has trouble clearing out properly, and runs down the strait on the build up of fuel and goes lean when that runs out just when it needs more. I hope this helps.

I am looking at the Bonito and the BTTS.Anyone can tell me what the difference and which one should i get for my MBX6R.Thanks

I have run with both engines and actually with the same car.

BTTS:
+ price
+ quality
+ tuning quite easy
+ very long using time this engine can takes so many gallon through..
- lack of high power

Bonito
- price
- reliabilty not 100% people have some tuning problems when weather is cooler
+ quality
+ power

But the choosing depends a lot what kind of racer you are and what kind of tracks you are running. I think in Euro style tracks Bonito is the right choose but in USA style...hmm

I currently run the btt in my mbx6 and its got enough power right thru the rev range, its modified and with a 7mm carb insert it holds its own against any os speed:nod:
I feel the btt is a bit more user friendly as the bonito in a buggy is brutal.

I haven't done a controlled test yet, but I'm curious. What sort of runtime are people expecting from the Plus-4C Team w/9901? I think I can do between 8 and 9 minutes from fill up to flame out. This being with the exhaust gas cooler, 6mm insert, C6TGC plugs in an MBX6R.

John I would think you should be able to get 10 minutes. You will have to do some testing.

Quick question...

I just bought this fuel filter and it didn't come with instructions specifying the In/Out fuel flow. Took a picture. Any suggestions, it's 50/50....:weird: There is a little hole on the right/center of the brass filter housing. Maybe it is the In?

Schumacher Alloy Sintered Fuel Filter (Purple)
[SCHU2851]

http://i1137.photobucket.com/albums/...FUELFILTER.jpg

always use the cavity side as the inlet ;)

left to right in the pic

thank you Sir :D

sir? come on now sheesh , just a racer like you brotha

i am here to help you guys if you need it

My Mom and my career taught me to be respectful ;)

+1 on that! Mine too!! Do we have the same mom? Brother is that you?:D

SURE :lol:

LOL... Good Times Brotha.:spidey::batman:

12:20 in my mugen when I used to run the MBX6

Is that one of the new novarossi inline filters::confused::D

No its a Schumacher Alloy Sintered Fuel Filter (Purple) [SCHU2851]. I chose it because it was one of the few filters sold on amain that has a clip to secure it. $7 not too expensive either.

http://www.amainhobbies.com/product_...-Filter-Purple

My btta is lacking on top end, it feels like you are pulling a boat down the straight. Bottom end is great it just doesn't have the top end it should. It has about 2.5 gallons of VP 30%. I am using c6tgc medium plugs and the weather here in MS is in the upper 90's. Im running the 2096/29 pipe and manifold. My temps are in the 265-270 range.

Could my problem be too lean on the bottom and fat on top or is there something else that could be my problem? There really isn't any indications that I am lean on the bottom and I have good smoke when I get on the throttle.

What are some things to check? Thanks

Tip: the ultra low pro heads read much hotter than normal heads , tune for power ;) then check temps for reference :D

Heat
 

It has been in the upper 90's here too. I put a #7 plug in it and it was easier to tune with the heat .You Might give that a try.

Also what insert do you have in the carb? 7mm is the magic one, but maybe you need the 7.5 for your altitude or humidity level.

I had the same problem with my Fusion X3 lightning in my mbx6, running 265 for temp.Tried everything, even messed with the tank and nothing fixed the top end power. Replaced the tank last weekend and ran great, not saying this is ur problem but worth a try. My tank was only 6 months old as well.

Richen a little at a time on the bottom and lean a little on top
Until you get that nice high top end note then recheck your bottom
End and idle.Very fine adjustments at a time. I use a 7mm insert and 6 nova plug in my btt, my pitman was
Was very impressed with my btt performance last meet:nod:

I am running the 7mm insert. I will give these recommendations a try.

Thanks for all the help!

put a JP3 on it...it will wake it up...but in the end those engines dont have the best top ends unless they are clocked LOL !

I have the P5 with Dynamite 086 and 053 pipes. Since I am planning to participate in a IFMAR approved event, only listed pipe can be used. I intend to buy a Nova 9901. Can I use the Dynamite header? Which header will work?

hi ajo .. yes the dynamite header of 086 n 053(almost same as 41021) fits my 9901ss too .. i dont know if its legal or not .. nova 41021 header will work good .. but for the p5 id recommend 9886 in buggy or 2096 .both come in ss

2096ss/41021 :nod:

Interesting pipe.
 

It has a stinger reinforcement. It looks like a thin walled pipe but I'm just guessing.

i'm good with the super strong pipes , that has been out for about 4 months now actually , thin walled pipes are good but do not offer the protection of the ss pipes ;)

bloody hell I have busted 3 screwdrivers already one of being a hudy driver trying to get out the last two head bolts on my roma I have put the heat gun on but have given up trying to get the last two actually ran out of screwdrivers:(, this is about my 10th nova engine and I have never seen them this tight from the factory:confused: I am getting worried as the screw heads are showing signs of damage:sweat:

You busted the 5.8mm hudy flathead made for novarossi engines? Really?

Yep
 

I like the SS pipes myself. I just thought it was interesting to see they do make some sort of reinforcement after so long without one. I don't use the 9901 anyway. I have one but it looks really new.:lol:

I literally just picked up a plus 21-4 team c and have an os 2060 and a 2090 from my os motors, will I really be losing much by using one of those? If not which pipe would you recommend of those two? If yes, which pipe should I get? Werks 2058, nova 2096 etc?

Is it going in a buggy or Truggy?

I would recommend 9901ss or 2096ss but i would bet the "new" 2090 from os would work very well since the os-xz line is now the same bore x stroke as novarossi ;)

Let us know

Of the two pipes you reccomended which would be smoother or just have good power all around? I assume you would reccomend the 41021 manifold? You're the man! It's for buggy!

no it was one of the older hudy flat heads but after a bit more heat and a tap on top of the screw head with a punch they finally cam lose but that was close:nod: new hudy screwdriver and screws on its way:D
probably a question for houston, the btt and the roma cooling heads are they the same? cheers

i have been very very happy with the 2096ss/41021 in the buggy ;)