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-   -   GRP... Engine... Thread... (https://www.rctech.net/forum/offroad-nitro-engine-forum/211114-grp-engine-thread.html)

itsshemp 10-27-2008 10:11 PM


Originally Posted by DirtyDezPirate (Post 4984670)
alright, so your going to the sidewinder nitro explousion... doesnt it require ROAR membership?

I cant rememeber if this race requires a roar membership, but I believe if it does, you can purchase one there. I already have mine, from some other race I entered a while back.

I run the GRP .21 also, and when it is running its best, it usually comes in at about 190-205 after a main. I guess it depends on the gauge your using also. I have seen some be 30 degrees different than mine, so...

Sidewinder is going to be a lot of fun!!

DirtyDezPirate 10-27-2008 10:20 PM


Originally Posted by itsshemp (Post 4985882)
I cant rememeber if this race requires a roar membership, but I believe if it does, you can purchase one there. I already have mine, from some other race I entered a while back.

I run the GRP .21 also, and when it is running its best, it usually comes in at about 190-205 after a main. I guess it depends on the gauge your using also. I have seen some be 30 degrees different than mine, so...

Sidewinder is going to be a lot of fun!!

I use Losi tuning screwdriver that has temp gun on end.. i know its not that accuried, but it was only 5 degrees the most, and 2 degrees closest to other temp guns. I just cant afford these high priced guns, i spend mostly on imporant things i will need for each races.

Also last race at Revelation, during day it would say 245.. but after about 3pm it goes down to 210-220.. when i only fatten it by half hour to one hour on hsn..

porkchop 10-28-2008 02:16 AM

i am hard on motors i go ahead and admit it but the grp the best motor i ever run imo it went 12 gallons on stock bearings them we pintch it and it now on gallon 13 it just keeps geting better and better :nod:

itsshemp 10-28-2008 03:59 AM


Originally Posted by DirtyDezPirate (Post 4985903)
I use Losi tuning screwdriver that has temp gun on end.. i know its not that accuried, but it was only 5 degrees the most, and 2 degrees closest to other temp guns. I just cant afford these high priced guns, i spend mostly on imporant things i will need for each races.

Also last race at Revelation, during day it would say 245.. but after about 3pm it goes down to 210-220.. when i only fatten it by half hour to one hour on hsn..

I have seen those Losi drivers be off as much as 30 degrees, but that may not be the case with yours. Hard to say, but as long as you got some smoke, and the engine is running fine, then temp is not that important really. I just make sure I am using the same gauge all the time, and use as a reference.

I have found the GRP to be real sensitive to tuning, so a tiny turn of the needles make a huge difference. Most of my adjustments are normally with the LSN, and not too much with the HSN. The LSN seems to cool the motor down, by just richening it 1 hr on the LSN. Mine is always within 1-2 hrs at any track i have gone to locally.

DirtyDezPirate 10-28-2008 07:32 PM

yeah theyre real senestive on tuning, i havent had issues with tuning it at different tracks.. it seems to be working fine other tracks.. Oh and the losi gun, mine was never 30 degrees off.. maybe your friend or yours was because you didnt clean the eye part. I use q-tip everytime i go onto the track wipe the dust, etc out of there.

DirtyDezPirate 10-28-2008 07:35 PM

Also the Sidewinder Nitro Explosion, there is no member required.. its pretty open, 40 bucks entery fee. 30 bucks additional classes.

for those who dont get this,

schedule is friday practice 10am to 7pm
saturday practice 7am-8am race at 9am qualifying
sunday practice 7am-8am, race at 9am main events.

and it is on the weekend of nov 8-9... at Thunder Alley, Beaumont, CA.

Poppin Fresh 10-28-2008 09:08 PM

Would it be possible to use the standard head button on the GRP Tuned version? Can I use RB plugs as well instead of the GRP plugs? What affect would this bring? I just can't justify spending $15 on a GRP turbo plug when I can get an RB plug for half the cost. Thanks a bunch!

desertbird 10-28-2008 09:15 PM


Originally Posted by Poppin Fresh (Post 4990237)
Would it be possible to use the standard head button on the GRP Tuned version? Can I use RB plugs as well instead of the GRP plugs? What affect would this bring? I just can't justify spending $15 on a GRP turbo plug when I can get an RB plug for half the cost. Thanks a bunch!


you don't have to use a GRP. OS P3's work great. yes they are still 10 bucks but not 15...

Jonro 10-29-2008 12:36 AM

You can pick up the GRP turbo's for $11 from here: http://www.carolinasrc.com/Webstore/...idproduct=8943

Thats the cheapest Ive found.

Well they were cheap when the Aussie dollar was worth 90cUS, expensive now for me with the Aussie dollar at 60cUS :(

porkchop 10-29-2008 12:40 AM


Originally Posted by Jonro (Post 4990721)
You can pick up the GRP turbo's for $11 from here: http://www.carolinasrc.com/Webstore/...idproduct=8943

Thats the cheapest Ive found.

the number 5 perfect :D

ABURTON 10-29-2008 05:43 AM

www.carolinasrc.com got a local racer some grp's in a 3 pack for even cheaper(per plug) I think. Maybe give them a call.

Poppin Fresh 10-29-2008 06:59 AM

It's not about the turbo plug guys...i just want to swap a turbo button from the tuned GRP (orange head) to a standard button head from a stock non-tuned version GRP (silver head). Would that be possible?

Jesse Robbers 10-29-2008 09:13 AM

I do not think GRP makes a std. plug button. Their orange head engine has a head and turbo plug button. The silver head engine the head and button are 1-piece which uses std plugs. So to convert to std plugs you need to buy that silver head and some std plugs, then measure the deck height to make it the same.

tallyram 10-29-2008 05:11 PM

there was a standard button made for the grp ninjas, if you can locate one.

DirtyDezPirate 10-29-2008 07:00 PM


Originally Posted by Jonro (Post 4990721)
You can pick up the GRP turbo's for $11 from here: http://www.carolinasrc.com/Webstore/...idproduct=8943

Thats the cheapest Ive found.

Well they were cheap when the Aussie dollar was worth 90cUS, expensive now for me with the Aussie dollar at 60cUS :(

damn about time! I just spent 55 bucks on 3 grp plugs plus shipping a month ago..


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