At The Back Of The Pack
Arm chair racerFirst time rider
Ok so I just did a hot cam and bigger 20mm carb on my 81 Atc 70 with full exhaust Livy it but I lost low end. Do they make high comp pistons for these things? I see that stock size is 47mm dratv has some that go to 48mm just not sure if that good or if that for a stock jug he dosnt respond to emails. Any help from u all would be great thanks.
At The Back Of The Pack
Arm chair racerAt the back of the pack
saw this on ebay just the other day.
im sure some one may find it interesting
http://www.ebay.com/itm/HONDA-SL70-P...#ht_500wt_1413
http://www.youtube.com/user/mudNwheels?feature=mhee
feedback thread for torque
post up good or bad
http://www.3wheelerworld.com/showthr...ack-for-torque
At The Back Of The Pack
Arm chair racerFirst time rider
I have a cam tho I donno if that's a stock bore o bigger I would prob need a diff head I wanna keep what I got just add a high comp piston to it and a high volume oil pump for sure
Power User
Teaching quads a lesson
I would go with a big bore from DRATV. It comes with high compression piston, cylinder, rings and gaskets for around $110. Its 88cc. I've got one on an XL70, it makes a huge difference.
08 Outlaw 525s
07 CRF70
04 Harley FLHRCI
04 TRX90
03 XR650R
03 400EX- XR650R engine
02 XR100R
01 Banshee
00 XR50R
00 XR70R
99 PW50
99 JR50
96,95 Sportsman 400
95 Xplorer 400
94 Indy XLT
87 Trail Boss
86,86,86,86,86 Scrambler
86 TRX70 x2
85 ATC350X
85,84 ATC250R
85 Red Tecate
85 LT50 x2
84 XR500R
84,84,84,84,83,82,80,79 ATC70
82,79 XL500R
83 ALT50
79,78,77,77,76 XT/TT500
76,75,74 XL70
72,71,71,71 SL70
72 Harley FX
72,71,70,70,70,70,70 CT70H
72 SL100
70,69 Z50
At The Back Of The Pack
Arm chair racerFirst time rider
Maybe I'm thinking to much on bike bikes where u can do a high comp piston in a stock cyl with no bore requires and u can't do that to these lil guys unless Simone tells me other wise?
At The Back Of The Pack
Arm chair racerFirst time rider
bump no one?
Roostin' Away
Arm chair racerRoostin Away
i'm not sure about the piston really, but i would imagine there is one out there.
all else fails you can deck? the head, i think that's the right term. milling a little off would take away a bit of the chamber size giving you more compression and later you could maybe add a spacer back onto it to get it back to stock if wanted.
just an idea, but hardly the best solution.
74 HONDA ATC 70
85 HONDA 125M (undergoing surgery)
85 YAMAHA YT60 red w/yellow trim (sold, still in the family)
"What the f*** are you doing Bill? The racetrack is no place for snacks and fancy cakes....
I'll have a Custard Cream if your asking."
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At The Back Of The Pack
Arm chair racerFirst time rider
yea sounds good but i think i rathor just slap a piston that will work in there. im sure there out there just got to find it dont know how but i will.
Power User
The day begins with 3WW
I have to tell you, if you think you can just "slap" in a piston and have better performance, then you get what you pay for. Performance comes from a harmonius balance of filter, intake, carb, piston, head mods and exhaust. Without all those items, your performance from hack and slap mods, will be slight. You get what you pay for. Best of luck.
Nicholson 500x (Project)
Nicholson 185s
Nicholson 110 (That takes an atc70 tank)
Ascott 500 head/350x (Project)
Homebuilt Racer Chromoly Suspension 110 (Ragin Runt)
PK Racing Suspension 70
A+ Inc Suspension 70
AWS Aluminum 90 frame
Hi Performance ATC Suspension frame rd350
Hi Performance ATC Suspension frame 90
At The Back Of The Pack
Arm chair racerFirst time rider
I have a 20mm carb kit and full exhaust also with the cam but thanks
Got The Holeshot
Arm chair racerJust too addicted
Just put in a Lifan and be done with it, it's a lot cheaper. If you want to go back to stock for some reason just keep your motor
At The Back Of The Pack
Arm chair racerFirst time rider
Nah if I wanted to do that I old I want something diff and my own
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