porting a hy 30.5

[creepingcharlie]

OK. I am going to get a full out run on video today. I most likely will not hack the pipe I will buy one that is tuned for the upper rpm motors.

 

[creepingcharlie]

Well I didn't get any video today. Got out of worm late and didn't wait to keep the wifie waiting to long seen how it Valentine's day. So hopefully tomorrow I can get a run in before I head down to Pomona for the nhra races this weekend.

 

[creepingcharlie]

OK ran it today and got some video of it. I will upload it later as I am getting ready to head to SO CAL for the nhra races. But I did GPS it and it only did 34 MPH. Which seems slow to me.

 

[Guest]

No that you have some more power you can run taller gears if your look'n for more speed.

 

[larryo]

Yes or you can swap the 2 gears around that might help.

No that you have some more power you can run taller gears if your look'n for more speed.

 

[BertR]

Hi larryo .. I have a issue that maybe you can help me with..on my port job it has a delay before it opens up to a insane rpm that balloons all four tires.Its like there is another gear ...should the power be solid from no throttle to full throttle Could this be a timing issue with the tranfer ports.

Thanks BertR.

 

[creepingcharlie]

OK here it is, the video of it flat out.

 

[creepingcharlie]

Hey Bert I noticed on mine it has some what of a little lag at the hit of the gas.

 

[Guest]

It winds up quick. You could run a taller gear ratio.

 

[BertR]

I have no lag at all off the start it is 4 wheel burnout on dry asphalt and thats with 35-29 gears. What I am dealing with is when it hits full throttle for 3-4 seconds then opens up into higher RPM. I want to get rid of the delay so it flows. PS You need taller gears holly crap that is quick and new shoes to boot lol.

 

[creepingcharlie]

Yeah it tops out quick. I am thinking about a belt drive for it. But if I go with gears what combo do you recommend. Right now it has 29/31/25/25.

 

[RampageHopUps]

porting a hy 30.5

Get a Flowsystem pipe and the lag will be gone.

 

[creepingcharlie]

Yeah I need tires bad. The sidwall are all gone and the rf tire foam is gone. Lol.

 

[creepingcharlie]

Get a Flowsystem pipe and the lag will be gone.

Do they make a pipe that fits a dunerunne or would it need to be modified.

 

[Guest]

Yeah it tops out quick. I am thinking about a belt drive for it. But if I go with gears what combo do you recommend. Right now it has 29/31/25/25.

The belt drive would only be slightly higher. You could run 35-25 for gears.

 

[rampagemt]

Re: porting a hy 30.5

35 25 25 25 is my favorite for speed without losing lowend

 

[Guest]

Just to clarify you need to have a good ported motor to run 35-25. If you did that to the stock motor it would be sluggish off the line.

 

[rampagemt]

Re: porting a hy 30.5

What I meant was I run 31 29 Idk why the Hell I thought 35 25 haha I am not all here. I will be putting on 35 25 on my tt when I slap my slicks on. I got big dreams for this 29.5 pro lite. It's my first modded motor purchase and come spring time my tt and losi are getting a good beating and see what makes it out in one piece lol.

 

[BertR]

I may have the tooth number wrong but anyhow they are the xt stock gears A and B are swaped.my truck was originally a XT. I figured I would throw that out there so you vuys know what gear im using

 

[rampagemt]

Re: porting a hy 30.5

If you swapped a and b gears you would have 35 25 25 25