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

cczjordan 11-10-2014 01:17 AM

Running gtr plus with 2103 pipe get average time of? 8.5-9mins? What combo can get10mins with enough power.

Autocratic 11-19-2014 11:34 AM

How does this engine run with the OS2060 or 2090 pipes?

VPProUSA 11-19-2014 11:35 AM


Originally Posted by Autocratic (Post 13668408)
How does this engine run with the OS2060 or 2090 pipes?

The 2060 works great, never tried a 2090.

BillyT. 11-19-2014 11:41 AM

I have the Arrow pipe on mine right now... will post up how it works out.

Just fired it back up yesterday.

Autocratic 11-19-2014 12:13 PM


Originally Posted by BillyT. (Post 13668427)
I have the Arrow pipe on mine right now... will post up how it works out.

Just fired it back up yesterday.

You have plans on running this weekend?

Autocratic 11-19-2014 12:14 PM


Originally Posted by VPProUSA (Post 13668410)
The 2060 works great, never tried a 2090.

What kind of mileage would the 2060 get versus the Arrow pipes?

BillyT. 11-19-2014 12:29 PM

Yes. I'm not expecting the best mileage, but as long as it'll go 8 it'll be okay. Kind of expecting this pipe to be a loud big bottom end pipe... I just need to get a good solid tune on the engine and figured I'd give this pipe a shot since I have never used it.


My GTR, though, has ceramic front and rear and a two needle carb... But I can test with the 2060, too... I ran the 2060 when I first got the engine, and it was pretty vanilla, but I had other issues that are sorted out now so I will be able to give some better info. On my Bullitt the 2060 is super smooth down low(I run all al shoes in buggy with 1.0 springs without issue) with a big top end, which is what I would expect the 2060 to do on the Arrow.

Trebber?

yeah, I am gonna be at Indy Saturday working this thing out. Small chance of going to Porter, but most likely will stay in town.

Autocratic 11-19-2014 01:50 PM


Originally Posted by BillyT. (Post 13668507)
Yes. I'm not expecting the best mileage, but as long as it'll go 8 it'll be okay. Kind of expecting this pipe to be a loud big bottom end pipe... I just need to get a good solid tune on the engine and figured I'd give this pipe a shot since I have never used it.


My GTR, though, has ceramic front and rear and a two needle carb... But I can test with the 2060, too... I ran the 2060 when I first got the engine, and it was pretty vanilla, but I had other issues that are sorted out now so I will be able to give some better info. On my Bullitt the 2060 is super smooth down low(I run all al shoes in buggy with 1.0 springs without issue) with a big top end, which is what I would expect the 2060 to do on the Arrow.

Trebber?

yeah, I am gonna be at Indy Saturday working this thing out. Small chance of going to Porter, but most likely will stay in town.

Sounds good. Yea it's me. I might be there Sunday. Not sure yet. Saturday will be there late running a few tanks probably if the weather is good.

I'm looking at a good buggy motor with a smooth bottom end to replace my OS 21 Max. Too much punch for me to drive the way I want to. This engine is looking to be the best option right now given the price. I have both the OS 2060 and 2090 pipes.

cczjordan 11-19-2014 02:37 PM

OS pipe is pricey, any alternative? I had d 2103 n 2072, my guess is 2072 might get overall performance

Neesh 11-19-2014 09:38 PM


Originally Posted by cczjordan (Post 13668763)
OS pipe is pricey, any alternative? I had d 2103 n 2072, my guess is 2072 might get overall performance

This is a great option and copy of the picco 2099/ o.s. 2060 pipe that I use with great results on my practice engines. I save the real deal for my race engines. It is thinner than the 2060 but for the price its worth it.

http://www.ebay.com/itm/141175075640...%3AMEBIDX%3AIT

very similar to these:
http://www.amain.com/picco-efra-2099...-combo/p255040

http://www.amain.com/reds-racing-efr...nifold/p299165

http://www.amain.com/os-t-2060sc-wn-...nipple/p300133

Autocratic 11-20-2014 12:00 PM


Originally Posted by VPProUSA (Post 13668410)
The 2060 works great, never tried a 2090.

Placed an order today for this engine. Hope ya'll can get it shipped out soon. Can't wait to run it.

Autocratic 11-23-2014 06:26 AM

What glow plugs can be used with this engine? The included plug is pretty long bit says P3. Can OS P3 plugs be used?

cczjordan 11-24-2014 09:17 AM

Yes, get p3/4, among the best plug in market

Autocratic 11-26-2014 04:30 PM

What needle settings should I use to start break in?

cczjordan 11-30-2014 03:48 AM

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


All times are GMT -7. It is currently 01:12 AM.

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.