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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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This weekend i was running the best lap times i have ever ran. Motor came in after warm up at 141, and after a 10 minute qualifier, at 148
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there is no real date on when the 40% is actually going to take effect? I would like to know Thanks
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Adam,
The Losi site describing the GRP needle settings has me confused on the LSN setting. The above pictures showing individual needles says the LSN should be .045 in from flush and the lower pictures showing the individual engines, say the LSN should be .045 out from flush. Can you please post which way it should be in or out .045. Thanks |
Adam Drake or any knowledgeable tuner,
My GRP tuned engine had a gargling sound at idle. I didn't really know what to do with the tune. It seemed to run away a little after revving, indication of a lean lsn. But at the same the gargle sounded like the lsn was too fat. I was running the GRP #4 plug. 50 degrees outside. |
Originally Posted by Franchize04
(Post 5441899)
Adam Drake or any knowledgeable tuner,
My GRP tuned engine had a gargling sound at idle. I didn't really know what to do with the tune. It seemed to run away a little after revving, indication of a lean lsn. But at the same the gargle sounded like the lsn was too fat. I was running the GRP #4 plug. 50 degrees outside. |
Originally Posted by Franchize04
(Post 5443051)
After comparing my measurements to the stock measurements, I discovered my lsn is back at .045(rich), my idle is at .042. I think I tuned my way into a false idle by opening the idle gap and running a rich lsn. I'm used to setting the top needle and then setting the lsn. I might have to change my tuning style with this engine.
hsn 3.5 turns out from bottom lsn 6.25 turns out from bottom hope that helps |
what restrictors are you using that get you 10+ minutes on a tank????
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i liked the 6.5 restrictor the best on this engine when i was running it, had good power and run time
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Anyone try a X-tech Big Boy pipe on the GRP .21 or .28? I'm considering buying this pipe or the O.S. Ninja pipe. Any recommendations???
I currently have, JP-1 MSR 1005 O.S. 2050 9886 |
OS 2050 without adoubt
I was testing one day and thought lets try someting different. So I put the 2050 on it. I never took it of again great power and graet millige. mzl Hellsavage |
One problem with that, I'm using the 2050 on my truggy now with a differant engine that really needs that pipe. Wanting to run my GRP .21 in my buggy for now. Just looking for a new pipe that is strong and gets good milage.
Going to mount the GRP.28 in my truggy in a month or two. I can switch pipes around then. |
Originally Posted by John Schafer
(Post 5445447)
One problem with that, I'm using the 2050 on my truggy now with a differant engine that really needs that pipe. Wanting to run my GRP .21 in my buggy for now. Just looking for a new pipe that is strong and gets good milage.
Going to mount the GRP.28 in my truggy in a month or two. I can switch pipes around then. |
I noticed that in Drakes article on how to tune these motors, they come shimmed for 30%. I've always liked running 20% just because I feel it's easier on the whole drivetrain. Is it ok to run 20% without removing the shims and what will that do to the tuning? I'm running the promo pkg so y'all know which plug and pipe I'm using.
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Any one know when the e shop will be online?
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UK Distributor?
Sorry wrong thread - need my eyes testing
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Originally Posted by Quietman
(Post 5461858)
Any one know when the e shop will be online?
let me know when it is ... anyone saying that this grp .21 tuned wont push a truggy ...needs there head examined ....pushed my jammin x2 to 2nd place today at a local club race with a few fast guys in there ...ran flawless all day ...plenty of power even on the loamy track conditions we ran ....running an odonells 97t plug grp pipe on 25%byrons gen2 ....never came off the track over 185-190 ....really impressed with this motor having raced it for the first time :nod: |
Does anyone know what size carb restrictor comes on the .21 promo kit setup? If I'm reading the online manual correct it's 8mm? I wanted to get some smaller ones when I order the engine.
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My Promo Kit tuned .21 came with aall the restrictors.
Cheers |
Oh - very nice, thanks!
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should come with 6,7,8 ....they make 5.5,6.5,7.5 kits im pretty sure
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If you want to buy a single carb restrictor just look for the old ninja engine parts on A-main. They aren't that cheap but if you just need a specific one.
http://www.amainhobbies.com/product_...oducts_id/7297 |
Quick question for anyone that has the GRP engines running them in a RC8. I thought I read somewhere that you need to get some setback eng mounts to get everything lined up and was just checking to see if this is correct?
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Just got my .21 tuned promo kit :sneaky: Getting ready to install now.. tomorrow, the break in begins. Pretty psyched about this one! :nod:
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Originally Posted by Miller_Time
(Post 5471320)
Just got my .21 tuned promo kit :sneaky: Getting ready to install now.. tomorrow, the break in begins. Pretty psyched about this one! :nod:
cool let everyone know how it goes ...should be smooth ...mine was other than the grp plugs suck ...test it before you try and crank it to save you some down time ....im running odonells plugs and they are doing great almost a gallon on the original plug i put in there ...should be smooth sailing :nod: |
Originally Posted by toughtrax
(Post 5464646)
Quick question for anyone that has the GRP engines running them in a RC8. I thought I read somewhere that you need to get some setback eng mounts to get everything lined up and was just checking to see if this is correct?
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Alan Burton,
If you plan to come to Arkansas with Jeremy this Saturday, can you pm me and let me know. I might need a little tuning help my GRP. This thing doesn't tune like anything I've ever owned. -Frank |
Originally Posted by zixxer
(Post 5471391)
cool let everyone know how it goes ...should be smooth ...mine was other than the grp plugs suck ...test it before you try and crank it to save you some down time ....im running odonells plugs and they are doing great almost a gallon on the original plug i put in there ...should be smooth sailing :nod:
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Originally Posted by zixxer
(Post 5471391)
cool let everyone know how it goes ...should be smooth ...mine was other than the grp plugs suck ...test it before you try and crank it to save you some down time ....im running odonells plugs and they are doing great almost a gallon on the original plug i put in there ...should be smooth sailing :nod:
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These grp tuned engines are the bomb extremeley happy :nod: look good good price with what you get in the promo kit cant complain at all :nod: so much better than my os v engines i usually run :)
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