Tuning TNT V2 Pipe - Pro Series

[headshock]

Now that Im finally used to my ski, Ive been having fun tuning my TNT v2 Pro Series Pipe. I'm interested in what everyone else has experienced as far as jetting for the exhaust manifold Spray bar.

Hull: Rickter Edge FS
Engine: TPE 1021
Carbs: FS 48s (M:135/P:127.5)
Pump: Torrent 48 (10/17 Prop)
Ignition: MSD Enhancer/RAD flywheel

Right now I'm only tuning the exhaust manifold spraybar, I have no water going into any of the pipe spray bars. This summer when it was really hot out (triple digit days) I was running a 110 then dropped to a 100 and noticed a substantial gain in Bottom end and Mid. It finally cooling down, Im not sure about the water temperature but it almost wetsuit weather. I just installed Temp Strips on the pipe at the exhaust manifold and on the Waterbox (range from 150 -220 degrees). I had a tuning session this week and dropped my jetting down from 100 to 90, 85, then finally 80 (the smallest Jet I own). I was finally able to get my temperature strip to read a number of 155 degrees on the pipe and nothing yet on the waterbox. Everything I have read says 175 degrees is the magic number for the exhaust manifold to the stinger. Is it typical to run jets smaller than 80 to the exhaust manifold? I was thinking of ordering some jets, how low do you dare to go?

At the stinger near the waterbox i Drilled a 1/4 inch hole in the stinger tube and am using a Blowsion Flow restrictor (show in the Pic) is there any way to make this restrict more water than it is to allow the waterbox to heat up? Whats a good Waterbox Temp? (I was shooting for 175)

 

[Quinc]

Post a diagram of your water lines.

 

[Storbeck]

I don't know anything about the tnt, but I have a pfp running wet and I'm at about a 50 jet size on the spray bar and flow control valve then 125 jet going into the stinger. Pipe runs 150-170 ish on the belly section with that combination

I would think with multiple injection points you might need to be down even lower in jet size.

 

[headshock]

Post a diagram of your water lines.

Its a direct feed from the pump with a "T" to spray bars, so cold lake water. As mentioned earlier I'm only feeding the manifold now the other valve is closed.

 

[Quinc]

Is the line feeding the sprayer also feeding the stinger? And do you have a T going overboard between them?

 

[headshock]

Is the line feeding the sprayer also feeding the stinger? And do you have a T going overboard between them?

Ah yes, the stinger is fed warm water off of the head. There is a "T" splitting water going overboard and to the stinger (with Blowsion Valve).

 

[Wetbuffalo]

Now that Im finally used to my ski, Ive been having fun tuning my TNT v2 Pro Series Pipe. I'm interested in what everyone else has experienced as far as jetting for the exhaust manifold Spray bar.

Hull: Rickter Edge FS
Engine: TPE 1021
Carbs: FS 48s (M:135/P:127.5)
Pump: Torrent 48 (10/17 Prop)
Ignition: MSD Enhancer/RAD flywheel

Right now I'm only tuning the exhaust manifold spraybar, I have no water going into any of the pipe spray bars. This summer when it was really hot out (triple digit days) I was running a 110 then dropped to a 100 and noticed a substantial gain in Bottom end and Mid. It finally cooling down, Im not sure about the water temperature but it almost wetsuit weather. I just installed Temp Strips on the pipe at the exhaust manifold and on the Waterbox (range from 150 -220 degrees). I had a tuning session this week and dropped my jetting down from 100 to 90, 85, then finally 80 (the smallest Jet I own). I was finally able to get my temperature strip to read a number of 155 degrees on the pipe and nothing yet on the waterbox. Everything I have read says 175 degrees is the magic number for the exhaust manifold to the stinger. Is it typical to run jets smaller than 80 to the exhaust manifold? I was thinking of ordering some jets, how low do you dare to go?

At the stinger near the waterbox i Drilled a 1/4 inch hole in the stinger tube and am using a Blowsion Flow restrictor (show in the Pic) is there any way to make this restrict more water than it is to allow the waterbox to heat up? Whats a good Waterbox Temp? (I was shooting for 175) View attachment 384485View attachment 384486View attachment 384487

Here’s what’s crazy is I have a 125 jet in my spray bar and get 160 degrees no problem. Anything hotter and it gets soft on the bottom. And the pipe starts steaming water that splashes on it causing other issues. I also have the comp stinger on my pipe.

 

[Roseand]

http://www.x-h2o.com/index.php?threads/tnt-v2-free-ride-production-pipe.165435/page-13
Post 255

 

[headshock]

http://www.x-h2o.com/index.php?threads/tnt-v2-free-ride-production-pipe.165435/page-13
Post 255

Thanks, that's a great thread, I have read it many times. Just for the record, my carbs feel dialed in and the pipe hits hard im just curious how low people are going with the manifold jet. I am learning, and I just realized (after rereading that) a key item I have overlooked since building my ski is the flow control valve setting. As you can see in this pic its as opened as it can be. Next test is I am going to tighten up the restrictor to max and see how that affect my waterbox temps and bottom end. Anyone else running these restrictors? if so pass on your experiances please.

 

[Wetbuffalo]

Thanks, that's a great thread, I have read it many times. Just for the record, my carbs feel dialed in and the pipe hits hard im just curious how low people are going with the manifold jet. I am learning, and I just realized one key item I have overlooked since building my ski is the flow control valve setting. As you can see in this pic its as opened as it can be. Next test is I am going to tighten up the restrictor to max and see how that affect my waterbox temps and bottom end. Anyone else running these restrictors? if so pass on your experiances please.
View attachment 384498

So I actually have found the only way to get the waterbox hot is to not have any water going to the stinger. I have mine off completely via a ball valve.

 

[headshock]

So I actually have found the only way to get the waterbox hot is to not have any water going to the stinger. I have mine off completely via a ball valve.

LOL probably because you live in Buffalo!!!!! Kidding only because Im a NY transplant that went to RIT, I know how Cold it gets.

 

[Wetbuffalo]

LOL probably because you live in Buffalo!!!!! Kidding only because Im a NY transplant that went to RIT, I know how Cold it gets.

Hahaha I know right! This is during the summer with 75 degree water temps too. All I do is change the spray bar. But I said earlier I get 160 degrees on my pipe with a 125 jet and water to the stinger off. This has always left me scratching my head.

 

[masterblaster]

If ya don't have tiny jets or worry about clogging them maybe use warm water to inject mani also with larger jet and get a little more consistent multi season pipe temp with same jet