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-   -   Rw modding and engine rebuilding (https://www.rctech.net/forum/offroad-nitro-engine-forum/242841-rw-modding-engine-rebuilding.html)

22Racer 10-05-2009 06:17 PM

My latest projects/ experiments have been titanium wrist pins for the Go engines. They would work on other motors but on the Go they tend to wear the pin and the piston due to the fit not being tight enough from the factory. (they may be tighter on the new Gx series) So I made a titanium pin slightly larger to make the fit tight again, this almost needs to be custom to each engine like during a rebuild.
I also have been putting a dome shape in the backplate for a little more case volume on some engines.
I also have 5.5 and 6.0 restrictors ready to ship, I'll try to get some pics up this week. They are $13.00 each.

Rex

shotime 10-18-2009 11:47 PM

Hey Rex,

Have you fully-modded a GX series yet? Do you have any and how much would you want for a 5 or 7 port fully-modded? Also, how much would you charge to fully-mod one if I got it from someone else?

22Racer 10-19-2009 02:05 PM


Originally Posted by shotime (Post 6491068)
Hey Rex,

Have you fully-modded a GX series yet? Do you have any and how much would you want for a 5 or 7 port fully-modded? Also, how much would you charge to fully-mod one if I got it from someone else?

I have not fully modded a new Gx yet, I just added a shim on Kendall's to change timing a bit. I'm even waiting to epoxy ramp the crank until it is broke in a little. (the rod comes off the crank much easier)
I charge $50.00 to fully mod. $10.00 less on a Go bought from me. I have 5 Gx 5 ports on order with 2 spoken for.
Around $255.00 for a Gx 5 port fully modded new, $280.00 with the 2072 pipe. 7 port would be around $15.00 more I believe. I am going off the map price I last saw, hopefully it wont change.


http://i291.photobucket.com/albums/l...h/100_0595.jpg


Rex

22Racer 10-29-2009 09:11 PM

The new 5 port Gx's should be here next week.

Looking at pics of the b-mods pincher the method I use is identical but a little more precise.

All Go motors I sell get $25.00 rebuilds instead of the normal $35.00.

Rex

22Racer 11-15-2009 10:03 AM

I have 2 new Massive mods Mg66's and one new Gx 5 port. I recommend the timing shim and the epoxy ramp on the crank on the 5 port. Pm me for a special price.

Rex

22Racer 12-27-2009 08:14 AM

I thought I would post a few pics explaining part of my process of rebuilding an engine.

First I disassemble everything, put the block, backplate, head, and take the front bearing out and pop the seals off. next I wash everything in a high pressure hot alkalai cleaner. I have seen pictures and video's from other shops that rebuild motors and have not seen any kind of cleaner in the shops. It is very important to have everything clean! In the other pic I am showing the bore guage I check the rod with, each number is one thousandth, so it reads down to .0001.

Rex

http://i424.photobucket.com/albums/p...2Racer/Rw1.jpg

http://i424.photobucket.com/albums/p...2Racer/rw2.jpg

http://i424.photobucket.com/albums/p...2Racer/rw3.jpg

22Racer 01-26-2010 05:51 PM

I picked up a few Skf front bearings at a good price, they are very good quality. I am offering a $40.00 rebuild and this will include replacing the front bearing with a new one. Rebuild includes Cleaning, inspecting everything, resize sleeve, professional assembly. Any other parts are extra.

E-mail [email protected] or pm me.

Rex

22Racer 02-25-2010 07:03 PM

I have the Alpha S852 and Z852 motors in and a shipment of Gx 5 and 7 port combo's coming next week.

Rex

meno222 02-25-2010 07:13 PM

i have 2 p/s to get pinch. what are your prices. thanks

22Racer 02-25-2010 07:53 PM

$15.00 for one $25.00 for 2, return shipping in the Us included.

$37.00 if you send the whole motor, inlcudes sleeve resizing, cleaning, inspection, replacing any parts. (parts extra) professional assembly. If I get a motor that is not worth fixing you only pay return shipping.

Rex

rider313 02-25-2010 07:57 PM

rex is a good guy he'll take care of ya.

Tor 02-25-2010 09:24 PM

Hey, that's my engine:cool: Rex does a great job with engines. I use him all the time.

icanttype1342 03-31-2010 04:22 PM

Rex,

Do you have alpha engines in stock? if so what are the prices on the Z852? thanks

22Racer 03-31-2010 05:31 PM

Sorry, out of Alpha's I need to sell this Massive mods Mg66, I will sell at dealer cost! $260.00

Some guy's have been wanting to see my work here you Go!

Rex

http://i424.photobucket.com/albums/p...omodsleeve.jpg
http://i424.photobucket.com/albums/p.../gocrank-1.jpg

Ruune 03-31-2010 10:52 PM

ohhh preeeetty... wonder who's engine that is?:sneaky:

What epoxy are you using for the ramp?


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