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Originally Posted by Jonro
(Post 5407028)
At the end of the day if i need to replace all that and with the amount of fuel through it(around 20ltrs)it would probably be cheaper to just salvage the ceramic bearings and carb and buy a GO engine or something.
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Originally Posted by tom yfz
(Post 5417960)
Jonro, Hate to tell you this, but the tune was off on that engine.
The piston has been cooked, and detination from being lean,and more than likely the lean condition has hammered the rod bushing out and changed the compression and timing, which in turn burnt the glow plug out. I would not salvage anything out of that engine other than the carb and head! Adam Drakes tune on this engine is: .045 in from flush Hsn .045 out from flush Lsn .030 in from flush, idle screw 6mm restrictor GRP 5 plug ( I run a GRP 4 plug) 2035 GRP pipe The engine will run between 150 to 190 degrees(nitrotane,30%) Good Luck |
Miller Time, yes those measurements are in inches, NOT mm.
The only one that is protruding is the lsn, it sticks out from the throttle ball mount. The other two are measured, from flush to recessed (below the surface) It should just need minor tuning from those settings (air density,temperature,clutch springs etc.) Good luck Tom |
Originally Posted by tom yfz
(Post 5419196)
Miller Time, yes those measurements are in inches, NOT mm.
The only one that is protruding is the lsn, it sticks out from the throttle ball mount. The other two are measured, from flush to recessed (below the surface) It should just need minor tuning from those settings (air density,temperature,clutch springs etc.) Good luck Tom |
Mr Losi is correct.
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Originally Posted by jpz_67
(Post 5406139)
Thanks for all the replies everyone I am still trying to decide, not ready to pull trigger just yet. Wouldnt you know as soon as I take interest in something the price goes up. The promo kits were on sale for 369.99 before discount at amain and now there back up to 445.00!!
To save up to $65 on your next order, enter the following discount code into your shopping cart before checking out. If your Order is Between:You Save:Discount Code: $75.00 - $149.99 $5.00RCFEB95 $150.00 - $249.99$12.50RCFEB912 $250.00 - $699.99$25.00RCFEB925 $700.00 + $50.00 RCFEB950 http://www.carolinasrc.com/Webstore/...idproduct=8834 http://www.carolinasrc.com/Webstore/...idproduct=8766 Not that it helps to much but whatever helps a little.... |
Originally Posted by tom yfz
(Post 5417960)
Jonro, Hate to tell you this, but the tune was off on that engine.
The piston has been cooked, and detination from being lean,and more than likely the lean condition has hammered the rod bushing out and changed the compression and timing, which in turn burnt the glow plug out. I would not salvage anything out of that engine other than the carb and head! Adam Drakes tune on this engine is: .045 in from flush Hsn .045 out from flush Lsn .030 in from flush, idle screw 6mm restrictor GRP 5 plug ( I run a GRP 4 plug) 2035 GRP pipe The engine will run between 150 to 190 degrees(nitrotane,30%) Good Luck I put over 20 ltrs of fuel through this engine without a hiccup, unless someone sneaked into my house during the night and totally messed with me needles thats the only way it could have run lean, which it wasn't. |
190 is at the upper end of heat for those GRP motors.
Heck tonight Truhe's motor was running at 170 and it was flying. |
Originally Posted by Alan D.
(Post 5425894)
190 is not hot for those GRP motors.
Heck tonight Truhe's motor was running at 170 and it was flying. |
I got a half gallon through my GRP tuned and its really coming alive. We had a test and tune day at the track and I was getting 11 minutes @ 160 degrees. I know it will get 12 minutes once it gets broken in good and race tuned.
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Has anyone heard about the new pricing plans or distribution? I plan to get one but definitely want to wait for their price drop.
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Originally Posted by Alan D.
(Post 5425894)
190 is at the upper end of heat for those GRP motors.
Heck tonight Truhe's motor was running at 170 and it was flying. |
What about breaking one in, should you still try to get to around 230F? I guess you would need to do some pre-heating and wrap up the head if so?
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How can you tell if your piston is black what does it mean is is too rich,but the engine has run 5 gallons + with compression
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