air8

iTrader: (7)

http://www.amainhobbies.com/product_...oducts_id/4864

http://www.amainhobbies.com/product_...ducts_id/23889

Aside from price, what is the difference between these two engines? Is the non-"K" last years engine? I'm thinking the 21-5K is updated somewhere? Just wondering.

Thanx

clarksib

iTrader: (12)

+1 Ive got one of the sale novas in my cart right now and want to know if it is worth it or if I should just get the 5k. Thanks a lot guys

TKCastle

http://www.neobuggy.net/modules/news...p?storyid=1639

ezveedub

iTrader: (17)

The K engines have two relief ports under the exhaust port. The head button is also changed. It runs the same balanced crank though.

houston

iTrader: (96)

the vertical transfer ports have been switched to the other side of the horizontal transfers , on p5, p5x, p5xs, plus 21-5 the verticals are closest to the exhaust , on 21-5k they are closest to rear main intake with diverters in the block to match . new style thick top ring sleeves to hold pinch at peak performance pinch longer is also another difference .
plus 21-5 is a great engine and if you wanna buy a 7 port piston/sleeve or 421b (821b) p/s set and make it faster you can .
hope this helps ,
monty

air8

iTrader: (7)

Oh this info helps alright. Thanks guys. I originally sought to purchase a 421B with the understanding it was a 4-port engine. Much to my surprise it's an 8-port. Well I didn't find the 421 for sale so I've decided on the 821B for my Truggy, and the buggy will get the Plus21 5-port. Probably the K with the intentions of moving to the 7-port sleeve later in the year, or next season.

Thanx a bunch guys.

razor_clawzz

iTrader: (5)

Hi Guys,

I have a P5X turbo head and there seem to be a little play in the conrod when the piston is at TDC.

Is it better to only replace the conrod or get the piston/sleeve conrod combo of a different family? (eg. Plus 21-5K & 5KT, CEO Power Mods Novarossi RX21P5X Piston or Plus 21-7 Turbo)

Thanks!

thecman26

iTrader: (112)

Dude, you dont need all that power! Save your money and throw a modded 3 port (like an OS VG) in both of them.... Get better runtime and pretty good power to boot... I heard guys around here getting 10-11 minutes a tank with the right pipe.... That and its half the price... $145 for the VG vs $300+ But who am I to give advice, I just dropped almost $300 on a C6, so dont listen to me!

air8

iTrader: (7)

Problem is I've had bad luck with the VG's. One of them the crank walks back and forth about 4mm and hits the crankcase internally. The other one developed a front bearing leak that was horrible. Both less than a gallon. Then my awesome 3 port Novarossi 21BF broke the con rod bushing into pieces after about 5 gallons. And apparently this is to be expected from that 3 port. All that and I'm much improved from last year, so it's time for the next step up. I think the 3 port might be holding me back slightly. I'll find out though. The 21BF is getting refreshed for a backup, so the 5 port can be the big race engine. If the Plus21 is too much I can always let off the trigger. LOL.

ezveedub

iTrader: (17)

If you have play on the rod only with good compression/pinch, replace the rod. Check the crank though, to see if its out-of-round, as that can cause play also. Bearing would be a good replacement at rod replacement IMO.

thecman26

iTrader: (112)

I hear ya man! Well if money was no object, then I would recommend the C6.. $339 on amain for the turbo version, motor only... Mated to an RB 2045 pipe is absolutely SINFULL (powermad).. . Why do ya think I bought one..... But seriously you cant go wrong with a P5, cool has a few in his bag of tricks... Also any of the JP motors are excellent!

jamminnay

iTrader: (11)

i am a fan of the rb ws7iii.. tons of power and excelllent runtime

fuzz86

iTrader: (12)

I have a stock P5XS for my buggy and a RB mods P5X for my truggy. Any suggestions on Pipes and glow plugs? I run 30% sidewinder and JP-1-2-3`s on my other stuff?

new to rc cars

iTrader: (1)

Hmmm, the exact same thing happened to me with my LRP .28, except I have A LOT of slack... in mine.

novaa

hi Houston,

what is the main different between the plus21-5 and plus 21-5k? plus 21-5k is a newer engine compare to the plus21-5 , but strangely is that how come the plus21-5 is stil more costly.
mind sharing what is the major different between this two engine ?
on the other hand in buggy racing turbo or non-turbo are better?
hope u don't mind sharing your knowledge. thanks