R/C Tech Forums

R/C Tech Forums (https://www.rctech.net/forum/)
-   Offroad Nitro Engine Forum (https://www.rctech.net/forum/offroad-nitro-engine-forum-157/)
-   -   GRP... Engine... Thread... (https://www.rctech.net/forum/offroad-nitro-engine-forum/211114-grp-engine-thread.html)

Toiffel 05-18-2009 08:48 AM


Originally Posted by zixxer (Post 5827180)
the settings by drake on that link were right up until the lsn settings were stated ...it was a mis print .....i posted a page back ny needle settings ...you are about where i am at 5 gallons ...so yes you are ok on the lsn settings ...i mean the motor comes 6.5 turns out from bottom on the lsn ...i thought the needle was gonna fall out ....but thats the way these motors work :nod:

sorry being a little bit lazy and didnt check.... it has a little less than a gallon, the only thing that I'm missing is more top end, maybe it's just cause it doesn't "scream" like my Vspec, so it makes me feel missing the top end, should I lean the top a little more??

zixxer 05-18-2009 09:06 AM


Originally Posted by Toiffel (Post 5827247)
sorry being a little bit lazy and didnt check.... it has a little less than a gallon, the only thing that I'm missing is more top end, maybe it's just cause it doesn't "scream" like my Vspec, so it makes me feel missing the top end, should I lean the top a little more??

no

not unless you really feel you need it ...you are right on point it wont tune sound or looko like a v-spec .it should come out of a corner and have a slight hesitation mid to top and then should spool up smoothly without sounding like its winding out and they dont scream noise wise on the top .that is why people smoked these engines early on because they thought everything should run and sound like a v-spec ...not saying you will never tune the hsn ...but not anywhere near what you would think ....in 5 gallons excluding break in ...i have tuned the hsn 4 times

Toiffel 05-18-2009 09:08 AM

also what carb restrictor do you guys recomend for a truggy w/21 grp tuned/2053 pipe/2 composite green springs & 2 aluminum black springs.......

zixxer 05-18-2009 09:10 AM


Originally Posted by Toiffel (Post 5827332)
also what carb restrictor do you guys recomend for a truggy w/21 grp tuned/2053 pipe/2 composite green springs & 2 aluminum black springs.......

i run the 7

Toiffel 05-18-2009 09:20 AM


Originally Posted by zixxer (Post 5827343)
i run the 7

what run times are you getting?? is it a truggy?

J4c03 05-18-2009 09:22 AM

Hey grp fans im running a .28 tuned in my truggy and ive noticed now after running my truck the motor gets a large build up of oils and dirt around the glow plug ive checked the glow plug to make shure its tight and that the cooling head was all the way tight but it just seems to be leaking. It runs great holds a tune great. i almost have two gallons on it and it usually stays at 210-230 depending on the weather, any ideas?

zixxer 05-18-2009 10:09 AM


Originally Posted by Toiffel (Post 5827397)
what run times are you getting?? is it a truggy?

jammin x2 crt,m2c 4 shoe clutch,odonells97t,7mm rest.2053grp pipe
i am coming in from 6:45 of running a qual ...and i consistently have 50-57cc of fuel left in a 150cc tank..this is the track i run mostly http://www.youtube.com/watch?v=0oJ6pMkRX3k im not much on running a motor out of gas ...but i feel like i can run 9:30-10 minutes mark


Originally Posted by J4c03 (Post 5827410)
Hey grp fans im running a .28 tuned in my truggy and ive noticed now after running my truck the motor gets a large build up of oils and dirt around the glow plug ive checked the glow plug to make shure its tight and that the cooling head was all the way tight but it just seems to be leaking. It runs great holds a tune great. i almost have two gallons on it and it usually stays at 210-230 depending on the weather, any ideas?

what type of plug are you running ?

J4c03 05-18-2009 10:48 AM


Originally Posted by zixxer (Post 5827626)
what type of plug are you running ?

O.S p6 Turbo plugs.

zixxer 05-18-2009 10:55 AM


Originally Posted by J4c03 (Post 5827798)
O.S p6 Turbo plugs.

i have seen o.s. and odonells plugs leak around that area ...there was aproblem early on with swapping glowplugs manufacturers and plugs not sealing up in there ....it is possible it is leaking ...you should be able to see it while its running puddling up around the glow plug ....other than that not really sure other than it does get mucked up in there from time to time?

J4c03 05-18-2009 01:35 PM

i cleaned it out and ran a couple tanks a little while ago but there was no build up of dust/oil mixed so maybe it was jsut a little loose we'll see what happens after a few more tanks i never did see it pudleign up either before when i checked it but who knows, thanks for the help.

zixxer 05-18-2009 01:38 PM


Originally Posted by J4c03 (Post 5828461)
i cleaned it out and ran a couple tanks a little while ago but there was no build up of dust/oil mixed so maybe it was jsut a little loose we'll see what happens after a few more tanks i never did see it pudleign up either before when i checked it but who knows, thanks for the help.

the guy who mods my motors mark at www.powerhousercperformance.com
said he had a similar problem getting an odonells plug to seal ...he said he literaly cranked it down a little tighter and it has been working ever since ....but you prolly got it bro

Matt M. 05-18-2009 03:05 PM


Originally Posted by zixxer (Post 5828475)
the guy who mods my motors mark at www.powerhousercperformance.com
said he had a similar problem getting an odonells plug to seal ...he said he literaly cranked it down a little tighter and it has been working ever since ....but you prolly got it bro


ihad the same problem....my solution was to chuck the od plug in the weeds and go back to os.:nod:

rc-mike 05-18-2009 03:30 PM

Do the carb restrictors affect the low end or high end more? I have been using the 6mm and have plenty of bottom end but would welcome more top end (although it is pretty good too).

wingracer 05-18-2009 03:33 PM


Originally Posted by rc-mike (Post 5828871)
Do the carb restrictors affect the low end or high end more? I have been using the 6mm and have plenty of bottom end but would welcome more top end (although it is pretty good too).

Bigger restrictors give more top. If mileage is ok you can go up to a 7 and should see some more top end.

tony montana 05-18-2009 03:37 PM

well its offical, I cant get my tuned to run right for anything. I tried the drakes settings, didnt work very well. I just want it to idle smoothly and be reliable and not flame all the time


All times are GMT -7. It is currently 06:00 PM.

Powered By: vBulletin v3.9.3.9 Patch Level 3
Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.