Gas ported piston. Nitrous or no nitrous

[Mousehouse]

I am trying to figure out if I want to laterally gas port my JE pistons. Later on I might run a little nitrous if this motor doesn't perform like we think it will.

What are your thoughts Monty on laterally gas ported pistons and nitrous?

[Monty Mikho]

Top gas ports in my opinion are the only way to fly. The side gas ports (lateral) I found were not the way to go this past season. Each side gas port seems to directly transfer heat to the rings in the area where the ports were at. I will return to the top gas port on all the pistons from here on out.

I would get the pistons on any nitrous motor top gas ported. Take your time when you get the pistons back to break any burrs they may have missed within the ring land area. Do not rely on the piston guys to do it for you. It will sometimes come back to nip you in the butt...

[Mousehouse]

I know you have talked about low tension rings and nitrous but can you refresh my memory?

The plan is to get as much compression out of this thing as possible, use a vacuum pump and a set of akerly & childs low tension rings. If I don't use nitrous are the lateral gas ports worth it?

[Monty Mikho]

I have never tested with and without gas ports on a N/A motor. Maybe Chris can chime in here and help. For nitrous there is no other way...

Low tension rings net nothing in performance on a nitrous motor. The low tension stuff nipped me in the butt when I used a 3mm oil ring. 3 mm oil rings do not come in standard tension. They came in a 6-12 # ( if I remember correctly) ring and that always netted oil in the chamber.

I would use nothing other than a HellFire ring for nitrous application. The C&A G-2000 Tool Steel rings crowned after 6 passes and jammed the rings. Wow the memories... :-D

[Mousehouse]

It looks like this motor is going to be n/a and nothing else.

Thanks Monty for the info. Chris said you were the one to talk to on nitrous.

[Chris Uratchko]

Well, since you were suppose to have sent me those pistons to gas port, I'm not sure what else to say!!!!!!! Send them suckers up already and quit thinking about it. :-D

[Monty Mikho]

Mousehouse, if Chris thinks gas port are the way to go on N/A motors, by all means send them to him. He will take the extra time to make sure they are perfect and clean of burrs... Trust me you wont get the same results from a piston place...

[Mousehouse]

Chris I am waiting on the machine shop to get done with them. Once they are done they are headed your direction.

[Monty Mikho]

Chris is it safe to say you agree with gas ports on N/A motors? Top or side or maybe both?

[Chris Uratchko]

Monty,

I always do a top gas port on an n/a competition engine.... I have tried a lateral gas port n/a, and I really didn't notice anything different.

FYI, I am told that there isn't an engine that leaves Billy Gliddens shop, that isn't gas ported both laterally, and vertically.

[Mousehouse]

Okay Chris and Monty what gas ports would be best for my combination?

[Monty Mikho]

I'm so outta tune with the N/A stuff!! I know the lateral stuff didn't work for the nitrous stuff.. Damn I hate learning curves when they cost pistons and rings.. Also one day we are gonna have to sit down a chat about a topic we talked about a while back ago.. :D

[RPM]

We (Perfect Circle) have a full line of Std Tension 3.0MM oil rings.... Bore range of 3.912" to 4.315"

I have a 1.0MM, .043"mini hook 3.0MM low ring stack in my nitrous engine. It sealed up great!

I know I'm a little late on this but I thought I would add some info.

[Monty Mikho]

RPM, Lukovich searched high and low and could not find a 3mm standard tension ring.. They had them in different pulls but they were still listed as low tension. If you talk to Jeff Lukovich make sure you mention that to him...

[RPM]

Monty they are new this year to the performance line. The thing with the 3.0MM oil ring is that we use such a small radial width rail it wont pull in a ZEBCO test like a fat 3/16 or 1/8 oil ring will. Our 3.0MM Std ten rings are created to follow the std. tension specs of the OE engines. The 3.0MM oil rings have a lot more conformability than the larger thicker rings of the past so you are able to run a lighter tension and thinner rail and obtain the control. Also remember that the second ring provides 80% of your oil control and the oil ring assembly only provides 10%. There is a lot of power to be obtained in the ring pack if peope aer willing to try new things........