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grp engine's

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T

tbb

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does anyone know what or if there is a difference between the GRP (#GS01K-21BU) Engine Sport 01 21 buggy PromoKit (silver cooling head) and the GRP (#GT01K-21BU) Engine Tuned 01 21 buggy PromoKit (orange cooling head)??
thanks
 
Last edited:
tbb said:
does anyone know what or if there is a difference between the silver cooling head and the orange colling head on the grp .21 engine??
Click to expand...

I don't think so, probably just the differance in color.....orange vs. silver, just like on the 427 with the orange vs. silver cooling head which I have both of if anybody needs an extra one, just let me know !:thumbup:
 
The GRP Tuned has a different timing profile making it a bit smother, and thus a very easy engine to race. And it uses Turbo plugs. The Sport GRP is almost identical to the Ninjas GRP made for Mugen about a year ago. Both are great engines.

taz there is actually a difference between the orange and teal head 427's. The teal heads have a different head button giving it a slightly higher compression ratio.
 
neobart said:
And it uses Turbo plugs.
taz there is actually a difference between the orange and teal head 427's. The teal heads have a different head button giving it a slightly higher compression ratio.
Click to expand...

The 427's also come with Turbo plugs.;) I was talking about the ORANGE cooling head and the SILVER cooling heads on the 427's which are the same except for the fact that one has a pull start(ORANGE) and the other has a spin-start backplate(SILVER)......Thank You !:D:p: I think that your thinking of the original LST Mach .26 which actually has a 'TEAL' cooling head that I have becaus eI got it from Durwank......Thanks again Big 'D'(pardone) !:thumbup::hehe:

I have 2 of these and 2 ORANGE cooling heads.....one in my LST2 right now with the 'TEAL' cooling head on it.;)
http://www.horizonhobby.com/Products/Default.aspx?ProdID=DYN0895

Here's the other one, which I have one SILVER cooling head from.
http://www.horizonhobby.com/Products/Default.aspx?ProdID=LOSR1002

Here's the Mach .26 with the 'TEAL' cooling head(from Durwank) which I have on my '427' in my LST2 right now.
http://www.horizonhobby.com/Products/Default.aspx?ProdID=DYN0887
 
do they both have ceramic bearings or just the tuned grp and what oil content can they handle? 10%?
 

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