Sprint77's Modded Dom pipe for Gas Jockey

[Gas Jocky]

Here is a very quick vid of my Ramp MT with Srint77's pipe. I will do a comparison vid on the weekend of two identical trucks, one with a race ported 28.5 stock gutted can, the other with a race ported 28.5 with a modded Dom. Side by side drag race. Initial impressions are WOW what a difference.


http://s137.photobucket.com/albums/q211/scdoo62/rc%20collection/?action=view&current=Sprint77sdommodquikvid.flv

 

[Clubin]

Good stuff, it still has that Dominator bite to it. Looks like success. I wonder when my pipe is coming?

 

[yolonda21]

Man that thing is quick..............i'm still runnin a stock motor and thought it was good until seeing this. Time for a 28.5 ported head kit i think................

 

[kryptonite]

ya, that looked pretty sick. now i don't know what to get... i want to see that thing flat out will do.

 

[mooman007uk]

wow that works well, hope my sprint ss mod works as well.

 

[Sprint 77]

I imagine the power will be close maybe little higher up on the RPM band. You have to give to get in 2 cycle tuning. Gas Jockey is a .750" header this will make for a quick "on the pipe" action lose little top end.


My rear mount SS mod will have lot more low end than factory SS did on Baja , but it is a Top end pipe, however you will need at least a big bore prefer a stroke motor like Gas jockey's for that pipe to haul @$$ . I predict the HPI SS conversion doing well in a large field , I think its weakness will be short track tight corners.

 

[mooman007uk]

I'll give it a go and see how it works..I got the oneills ported 28.5 and 813 carb on it now with stuffed crank and everything port matched, hopefully it'll have the low end I want, if not then you might be getting a black pipe coming your way for the hellya special

 

[Sprint 77]

I'll give it a go and see how it works..I got the oneills ported 28.5 and 813 carb on it now with stuffed crank and everything port matched, hopefully it'll have the low end I want, if not then you might be getting a black pipe coming your way for the hellya special

Think about the combo You lose top end RPM when you go with the stroke 28.5 motors , but you gain loads of bottom end, now you put a top end tuned pipe on the motor that already has loads of bottom end you get some of your top end back. So In my opinion you should have a better combination to the DOM Especially if you run in a big area.

 

[Gas Jocky]

Unless I'm missing something the gp290's (28.5's) don't have a stroked crank... mine doesn't.

 

[Sprint 77]

Unless I'm missing something the gp290's (28.5's) don't have a stroked crank... mine doesn't.

I am sorry you are Right I seen the 28.5 and didn't read the GP 290 in the post before. There is two ways to come up with a 28.5 either full big bore 36 mm or 35 mm with a Stroke crank which actually comes out to 28.9 cc but some think it is called a 28.5, The later is the combo I got for mine with a cnc cylinder porting.


Thanks Gas Jockey for the correction I hate for newcomers to get bad info I apologize.

 

[Gas Jocky]

Drag race


As promised, here is a vid of Sprint77's Dom pipe vs a stock gutted can. Both trucks were set up with Oneill's race ported 28.5 engines with stock gearing a25 b35 c 25 d 25 both with 8000 rpm clutch springs. The trucks were equal in speed and acceleration before the Dom was installed. The Dom pipe definitely has tons more bottom end torque and the top end is noticeably better. Overall a huge improvement


http://s137.photobucket.com/albums/q211/scdoo62/rc%20collection/?action=view&current=stockcanvssprintsdom.flv

 

[kryptonite]

oh mann!! do you ever let off the throttle! you road her like you were never gona see her again(oops)big diffrence. very nice

 

[Pete379]

That is totally insane. Is it possible to get a couple of pics posted with the lid off so i can see how the pipe connects?

 

[Gas Jocky]

That is totally insane. Is it possible to get a couple of pics posted with the lid off so i can see how the pipe connects?

here ya go


http://www.redcatrampageforum.com/showthread.php?t=648&page=2

 

[Pete379]

Thank you! Thats a sharp looking pipe. Big fan of the DOM.

 

[Gas Jocky]

We are going out tomorrow and will be doing a vid of Sprint77's Modded Dom vs Sprint77's Modded Redcat alum pipe, same trucks. I just have to fix my diff I blew today because of all that crazy torque the Dom gives! LOL

 

[Sprint 77]

Good vid comparison , Like I have said I am better at the fab work than the Video and pics, You seem to enjoy that part Gas Jockey and you have an eye for it, keep them coming. It only helps the Rampage cause.

 

[Gas Jocky]

Hey let me know if there is anything in particular you'd like on video, maybe a tug-o-war or an on gravel drag etc. We always have somebody around willing to tape for us.

 

[Clubin]

GJ-awsome video! Just a quick question how much do you guys charge to do the ditches? lol What broke in the diff, just curious. Looks like you are ironing out the weak links. lol

 

[yolonda21]

Was that an old style diff, or the upgrade you blew?