IMO - you can't go wrong with any of the Argus motors. The A5 worked well for me in buggy (a bit underpowered in a Truggy). I run the R8 in my truggy, and LOVE it!! The version Rex as with the ceramic bearing bearing, adjusted crank timing and lapped is a great deal (I got mine before that was offered). That motor runs well in both buggy and truggy from what I understand. The D52, is a great motor too. I have ran that in buggy and it works really well.

You can have them modded to your liking or run them stock. Very good mills on every track condition I have run.

I am pretty sure I will go with a modified A5 for GT. R8 modified looks to be a truggy motor for sure power wise. D52 stock from a video I watched at fear farm looked pretty good. Maybe get the D52 modified to smooth it out. I currently have mulitple novarossi pipes. 9910 & 2096. Also have dynamite 053 and werks 2013. Are there any magic pipe to motor combo's anyone would recommend? For truggy looking for more grunt on the bottom to move the larger vehicle and tires, and buggy want smooth power. GT I want a blend of torque and rpm. I am sure Rex can tune the motors to my needs!

Yes the A5 is your only Argus option for a 5 port without bypass. I am thinking whoever came up with this rule has no idea what a bypass port is or does.

For truggy the .23 and R8 are great, I like the modified R8 best. For buggy if it is slippery I think a D52 with a crank insert for mileage would work very well. I think in truggy on a shorter track the 2013 pipe would work well. The 2096 and 9901 might work well in a buggy but I have never tried them. For pipes that I have I like the 0801 for more bottom and 2090 for smooth powerband.

Rex
Rex

I agree with that bypass ports shouldn't be considered ports. I will do some more inquiring about that with our race director. If I could just get a good view of a novarossi ISON GT piston and sleeve on the web I could count the ports. It's supposed to be a roar compliant motor but says 7 ports on the novarossi site. Picco also make a roar legal 5 port and will see if I can find some pictures of it. I was really looking for the R8 for GT but I know it will raise alot of flags if someone see's an 8 on the case and will think it's an 8 port. I just wish we weren't going to roar regs and wouldn't have to worry about it.

I have been looking at the Argus line of engines for a while, reason being i watched a guy race with one down here in Australia, that thing was nuts,
I couldnt believe the power.
So im looking at the R8 or the .23 for TRUGGY
Does any one race with the .23 would love to hear feed back
Also i noticed 22racer sells on EBAY , do you ship to Australia? cant buy them here.
cheers chris

He does have a web site also look at my signature. The 23 in Truggy with the tb1 pipe set with the blue reducer is my favorite in Truggy class. Get about 10 minutes on a large track for me. The r8 will increase runtime and will push it just fine also. But on the R8 in Truggy I personally like the 0801 pipe for bottom end in the truggy. Both engines I use the 7mm reduce in the carb. But if I remember correctly they only come with the 8 in the 23. If you had alpha those reducers will work also. They are great engine ran them all last season with a problem. I at least got about 5 gallons on both engine. Lost count some where. I never changed a thing yet. They run great all the time. Also 22 racer is Rex he does have a thread here on rc tech called r&w modding he does great work. He is also a pleasure to deal with and talk with.

Im running the Argus .23 in my mugen mbx7t. Engine is excellent. Im using the 0801 pipe, 4 shoes clutchs, 14t bell in the truggy. Engine holds the tune excellent, work perfect at 240°, with this engine and pipe I stop at the pit to fill my tank every 9 minutes (should run 10 or 11, but safe at 9), I have the 3 stages power with this combo (bottom, mid & top). Fuel is Merlin 25% nitro 11% castor oil. Hope this info help you.

I called roar and they said to contact Paul King. Cody King's father. I am friends with both on FB. Paul says transfer ports don't count as long as they are above the piston in regard to the 5+2 engines for GT. Paul is going to talk to the committee guys at ROAR and than post clarifications on the ROAR web site. I hope I can run the R8 for GT.

I am going to pull the trigger on a modded R8. If someone at the onroad track complains I will just throw the motor in my Truggy. Also, what motor is going to have a smoother linear power band; a stock d52 or modded A5 for buggy.

I ran my A5 with .4mm shim n keep blowing p3/p4 plug, byron 25%/11%. guess .5mm factory shimming will be best

If you are running higher nitro fuel, stock shimming should be used. Also, if outside air temperatures are high, try a P4. I only run P3's in the winter when temps are below about 50F. Otherwise the P4 will work and last longer.

I have had a couple Argus .23 with too many head shims from the factory. If you have a .23 I would check and verify you have 1) .2mm and 1).1mm or .004" and .008" shims. The ones I found had 2 thicker shims.

Rex

I am really pumped! Talked with Rex today, and he has 2 motors going in the mail for me tomorrow. Modified R8 for Truggy and decided a stock R8 in buggy. I am sure I will need to due some clutch tuning with a heavier flywheel for the R8 in buggy since it's a really strong motor. Looking at using .9 or .95 springs with a steel flywheel. I run M2C clutches.

Stock A5 (7mm venturi) combo wit tb-1 (8mm stinger) pipe give good power n able to get 10mins in small/medium track. Is a very good engine

As soon as you run the R8 let me know, Im thinking to use it in my XT9, let me know the power and performance, thanks.