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OK.....maybe its just me, but it seems like the top end of my R is knocking like crazy! I just picked up this R and it has the CT 330 kit on it.
Is the knocking noise normal on the R's? I am new to actually owning a 2-stroke, but have been around them for years. I have always owned a 4-stroke until now!
Special Agent
It's hard to say with out hearing it. 2-strokes are normally a little noisey. Being you have a big bore I bet they have a high compression piston and you may be hearing spark knock. Try some 110 octane and see if it goes away. It could also just be a worn out motor and you are hearing piston slap.
2004 TRX450R, HRC equipped, Yosh full system. SOLD
2003 TRX400EX
1993 Harley Davidson FXSTC
1992 Mustang GT 331 Supercharged 6-speed
1985 Mustang GT
1985 ATC250R ESR
1985 ATC350X Restored
1984 XR500R
1982 XL500R
1977 F-150 4x4 4-speed 460
1976 TT500
1966 Fairlane
Jihad Provider
If you are hearing a "knocking" sound up high on the jug you can just about bet that it is a lose bore and needs to be rebuilt. It sounds like a tap, tap, tap, and increases with higher revs.
http://img73.exs.cx/img73
its gonna blow that what we heard in my freind 310r whne were going back to the house but by the time we got back it was gone.
2002 300ex SOLD
whats next idk
Ride RED
Some noise is expected like the otheres have said. what octane of gas are you running? with that 330 kit you should definetly be running 110+ octane race gas
--I race because I can, you watch because you can't
--Speed kills, live forever, ride a 4 stroke--
--four strokes are like tampons, every puss has one--
--the only thing tighter then my ride was your girlfriend--
Honda trx 250r @ 350cc
Eddie Sanders 330 bigbore kit, 5mm stroker crank, ESR TRX 5, Centermount pipe and Silencer, Hinson clutch, AC bumper, K&N air filter, +2 lonestar front end, +4 ACE Fabrication swing arm, Lonestar Axle, 40.5mm carb, PRW oversized radiator, Nology profire coil and plug wire, Kenda Radials or 4 SNOWs and RAZR's, 110 race fuel, ported by Neil Pritchard, anything that can be Powder coated is
-2004 Honda TRX 450 R- high compresion piston, pipe, blingstar bumper and grabbar
1987 Honda TRX 250r- coolhead, fmf pipe, 38mm carb.
-1984 Honda 200x
2004 Honda CRF 100
--HIGHER GROUND HILLCLIMB TEAM--
--Illinios State Chanpion 2 stroke quad in 08, and 09
--Indiana State Champion in 09, 3rd in 08
--Finished 1st in D15 points in 06, 07, 08, 09
--Finished 2nd in points District 15 Hillclimb-05--
-- Finished 17th at the national Hillclimb in WV in 2005--
--Finished 8th in points District 15 Hillclimb-04
--Finished 28th in the Ironman GNCC in 04--
--Finished 4th in the Haspin Acres Halloween 100 in 05--
--Finished 3rd in the Haspin Acres Halloween 100 in 06--
--Finished 6th in the Haspin Acres Halloween 100 in 07--
http://img73.exs.cx/img73
what should you be runnig with a ct 310 kit
2002 300ex SOLD
whats next idk
Ride RED
That depends on your compression. I ran preimium in my stock motor.... i would run 104 or 110 if i was youdepending on compression. You cannot run too high of an octane in your motor, running too low will cause it to knock because 2 flame fronts will meet when the fuel combusts. You can increase the life of your motor and get a little performance out of higher octane. the only thing it will hurt is your wallet.
--I race because I can, you watch because you can't
--Speed kills, live forever, ride a 4 stroke--
--four strokes are like tampons, every puss has one--
--the only thing tighter then my ride was your girlfriend--
Honda trx 250r @ 350cc
Eddie Sanders 330 bigbore kit, 5mm stroker crank, ESR TRX 5, Centermount pipe and Silencer, Hinson clutch, AC bumper, K&N air filter, +2 lonestar front end, +4 ACE Fabrication swing arm, Lonestar Axle, 40.5mm carb, PRW oversized radiator, Nology profire coil and plug wire, Kenda Radials or 4 SNOWs and RAZR's, 110 race fuel, ported by Neil Pritchard, anything that can be Powder coated is
-2004 Honda TRX 450 R- high compresion piston, pipe, blingstar bumper and grabbar
1987 Honda TRX 250r- coolhead, fmf pipe, 38mm carb.
-1984 Honda 200x
2004 Honda CRF 100
--HIGHER GROUND HILLCLIMB TEAM--
--Illinios State Chanpion 2 stroke quad in 08, and 09
--Indiana State Champion in 09, 3rd in 08
--Finished 1st in D15 points in 06, 07, 08, 09
--Finished 2nd in points District 15 Hillclimb-05--
-- Finished 17th at the national Hillclimb in WV in 2005--
--Finished 8th in points District 15 Hillclimb-04
--Finished 28th in the Ironman GNCC in 04--
--Finished 4th in the Haspin Acres Halloween 100 in 05--
--Finished 3rd in the Haspin Acres Halloween 100 in 06--
--Finished 6th in the Haspin Acres Halloween 100 in 07--
I'm running VP C12 which is 108 octane. I rode it all last weekend and it ran good. I think I might have over reacted with the noise a little bit. I'm not used to the R yet. I talked with some other people and the previous owner and they said that i'm ok (they listened to it run).
Thanks for the info guys!
Member
If you just bought take the cylinder off and check the piston,rod + wrist pin bearing. base gaskets are cheap! bore it and replace the piston if you are unsure.Pro Cross are high maintnace and require close attention to piston wall clearances. Its not pretty when they go boom!Also check the counterbalancer bearings for play.Just trying to save a headache over buying christmas or new motor.
88"310xcR- ct310,GPR ,houser +1stem,elka front ,hiper wheels,fmf h-40 pipe,V-force,air stryker,lonestar rearaxle,antifade+carrier,wave rotors,Quadtechhood,protapers,prm plate =bumpers,KLOTZ lubes,Axis rearshock,burgard swing and a-arms, 86xcR- under cons. 350PV cylinder,LRD bb pipe Vforce,Air stryker,elkas,c-series (black),red maier,Houser -1 swingarm,hinson,late model tranny with yukon gears,ac propegs,sitting on crate while collecting more funds.
XC430EX - 11:1piston,edelbrock carb,Curtis sparks X-6,mod head,stage2 cam,hinson8plate,works rezzy fronts,axis rear,hi pers,holeshot xct's,burgard +1's,pro tapers,wave rotors,prm plates + bumpers 88'XC310R - 38air stryker,Vforce,fmf h-40 pipe,pro tapers,burgard stem+1 a-arms,wave rotors,rpm axle+axle housing,hi pers,holeshot HD's,Laeger swingarm,axis front+rears,hinson,pep damper,WER damper too,sunstar,regina,cycra,renthal,KLOTZ lubes 86'350PV R - CTcylinder,40.5mm pwk,LRD BB pipe,hinson clutches,Vforce,burgard-1 swingarm,ac propegs,and running out of greenage so she resting on a crate for little while!
R's have a KNOCKING sound it drive me nuts, but they have that sound
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