R/C Tech Forums - Arrow Racing GTR .21 Engine Thread

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- - Arrow Racing GTR .21 Engine Thread (https://www.rctech.net/forum/offroad-nitro-engine-forum/461596-arrow-racing-gtr-21-engine-thread.html)

nosepick

11-30-2014 07:09 AM

Quote:

Originally Posted by cczjordan (Post 13688897)

Browse back few pages, mine:
Lsn-flush
Hsn-2.5 to 3 turn out from full close
Msn-1.5 to 2 turn out from flush
Idle gap factory shud be .7-1mm

If engine stall after fire up, lean lsn a bit till idle good, if u had some experience, reduce the idle gap.
After break in leave the msn, it will give good torque, lean it for mid/top end

Maybe others will have better idea

How do you compare this engine with the UDP? does it has more low or high RPM power? how is fuel consumption?

cczjordan

11-30-2014 06:22 PM

Udp is 4 port, new champion 5 port, totally difference in timing n power band. this engine best to compare to mugen ninja, fuel economy depends on tune n pipe, 8-9min easy

xxxntwv

11-30-2014 06:56 PM

We are running the new v4 indoors with the arrow pipe.my friend gregb ran the whole 10 min main without pitting.fuel mileage is very good on this engine.

cczjordan

12-01-2014 01:13 AM

I think so. The pipe make it smooth n good power with reasonable fuel consumption

cczjordan

12-29-2014 07:20 AM

Will the plus (+) works with os 2060 pipe? Have 1 buy never tried

Intech BR-6

12-29-2014 07:22 AM

Yes

Autocratic

12-31-2014 04:42 PM

Anyone have the v4 motor in a truggy?

TRUGGYRACER1

01-06-2015 02:01 PM

Quote:

Originally Posted by Autocratic (Post 13752787)

Anyone have the v4 motor in a truggy?

I would like to know the same thing also I have at truggy and was wondering the same thing

Frank Hodits

01-07-2015 08:02 AM

The 5 port works great in Truggy.

TRUGGYRACER1

01-07-2015 03:42 PM

Anyone else??

cczjordan

01-08-2015 02:35 AM

Did u see anyone running ninja in truggy? Hope it give u an idea

BPro	01-18-2015 11:43 PM

What is a good truggy Arrow engine/pipe combo?

cczjordan

01-19-2015 03:04 AM

Gtr plus + 2103 pipe, more btm

Skillett

01-25-2015 12:25 PM

Great motor,first time running it,Still a little tight but managed to run 7 1/2 pretty easy with a 2035/pipe and 6mm restrictor. In mb7r. Thanks Dailed for the motor.9 min motor easy when fully broke in.Still got metal pinch..Really smooth,and all the power you need.

cczjordan

01-30-2015 08:16 AM

After fully broken in, what is the shimming for 25%, p3/p4 plug, ambient temp 28-33°c

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