Thread:

Engine placement in a TX19

Learned some more stuff today,13"7/16 is the mouth opening, my shoe pad is set at 2"1/2* tapered, nozzle is at 5* up and my nozzle insert is 3.050

Also made a shim stack to play with

Originally Posted by #509

I run a BC imp, inducer, w/NO launch control and I flat foot it from a dead stop.
Motor @ 23"
2 1/2 degree backcut shoe
Hyd diverter on timer
6' blocker
Full interior 650lbs hull & leaves hard like an 18'

we run similar stuff in the #905 but with a launch control.


back to lurking

This is a treat. Steve what RPM are you spinning when you flat foot it outta the hole? I have the same impeller and inducer so it will prolly be close to mine.

Originally Posted by Boost

Here's a pic of mine TX 19', has a really good hole shot , I actually got lots of my info from Need4speed77 thx Dennis my motor sits 2" in front of my intake, sets hard out the hole with motor placement far forward.

Looks great. Here's a picture of how my old 19 ran.

Originally Posted by 525SC777

Boat seams real wet after talking to several folks, some previous owners too, it seems it's still kinda still in the air, where I should place my motor in my Tx19, some say its a matter of personnel preference? boat weighs around 420 and I make right at 750hp na, plus a 300 shot. It has a AB stainless with inducer, loader and all the performance norms. I Think it has 2 degree wedge now but not for sure? No diverter....I could give a shit less about a gay ass rooster tail, it has a race nozzle on now, but I have a place diverter if necessary? So, 21 inches from transom or 26 is the big question? One of the reputable owners said in the pic below with him driving he said it needed more wedge! Motor is set at 26 inches from transom in all pics below. Boat ran 107-108 with a 555 and a 400 shot. At around 800ft mark is what I was told.

PM Sent.

Originally Posted by bp298

mike, what they are talking about is a programmable rev limiter. basically, you "program" whatever engine acceleration rate you want, from 0 to 12,000 rpm, in as quick or as short a time as you want. it's used with either a wot switch or an off-idle switch to initiate the timer, and the ramp activates. for example, from dead stop idle, you might want the engine to accelerate to 5000, then ramp up to 6500 over a 2 or 2.5 second time period. you just program it in and that's your ramp. you can extend that period, shorten it, change the beginning/ending rpm, etc. whatever keeps the boat hooked up.
from a race standpoint, it's a very useful tool .

i'm not sure if msd still sells the 7561 as a stand alone launch control?? the program is incorporated into some of the digitals.


http://www.msdpromag.com/pdf/frm23500.pdf

In the car world, they call it "riding the dots"

Originally Posted by CP598

Looks great. Here's a picture of how my old 19 ran.

this looks to running tittys,hope i can get mine to run like this

Originally Posted by Need4Speed77

This is a treat. Steve what RPM are you spinning when you flat foot it outta the hole? I have the same impeller and inducer so it will prolly be close to mine.

In my GW on motor 6500 (470 iron chevy), but the same jet drive was in my cheyenne and would spin 7300 ( 500 aluminium pontiac) and that too was flat footed

MPD imp, inducer, and bowl

Originally Posted by #509

In my GW on motor 6500 (470 iron chevy), but the same jet drive was in my cheyenne and would spin 7300 ( 500 aluminium pontiac) and that too was flat footed

MPD imp, inducer, and bowl

Damn. I wish i could keep mine that low. I have mpd bowl, inducer and I spin to 7700 if I flat foot it. I have to roll on the throttle or use the launch control.

Does ride plat length make a difference? Mine is 18" long and my buddies is 16 3/4