Something big is coming

[tntsuperjet]

We have been working on this just over a year now.
The the only motor we have tested that actually broke 200hp mark. The pic is of Cyl before it was finished.

 

[tntsuperjet]

Two days testing this what it did to a 16-21 X 158mm prop

 

[rhugo21]

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[AdzUK]

Nice!

 

[Quinc]

Making these now?!

TNT performance 860 and 880 race motor packages.
I am working on a new 860 and 880 CC race motor.
Designed to run 8100 to 8450 rpm.
This package will be complete top end with pipe and billet exh manifold.
The pipes for these motor will be specifically designed for these engines and will be lay down pipe design.
Kits will include, reeds, cyl, pistons, head, exh man, chamber and waterbox.
The 880 requires tnt billet cases and crank as the bore center is wider.
Right now the current 880 billet case motor is just over 200hp at 8120
Rpm at 4,000 ft elevation.
The 860 I am working with a mono block cyl on stock 62t bore center and hope to have it on dyno in few months. 860cc motor I'm hoping for high 160's in HP in the 7850-8000rpm range . The 860?is starving for transfer port volume so high rpm and hP not going to be easy.

 

[tntsuperjet]

Quinc. The 860 and 880 have been done for 6 months.
There a couple out there.
This is a 1200

 

[McDog]

One side bridged and the other not?

 

[INDebtSJ]

I think its unfinished. Left side is cleaner than the right.

 

[Wizards Powersports]

One side bridged and the other not?

Looks like a test cylinder. Remove the bridge from one side, run her hard, compare the ring wear from one cylinder to the other

 

[Harbor]

Looks like the bridge was added after the casting was done

 

[stefan]

What cases ?

 

[964Chris]

got any dyno sheets for it?

 

[keith t]

This a TPE casting ? I notice the curved PVs

 

[jonolove]

View attachment 301890 We have been working on this just over a year now.
The the only motor we have tested that actually broke 200hp mark. The pic is of Cyl before it was finished.

I thought your 880 was 200 + hp which I believe was stated on it's thread am I mistaken?

 

[Quinc]

I thought your 880 was 200 + hp which I believe was stated on it's thread am I mistaken?

http://www.x-h2o.com/index.php?threads/new-tnt-race-motors.155801/

 

[Proformance1]

Cant wait to try this one Tim. You definitely are doing your homework on it. The details on the internal workings are impressive.

 

[Jetfiend]

View attachment 301891 Two days testing this what it did to a 16-21 X 158mm prop

That's crazy it's burning that prop, what hull are you guys testing Godzilla in?

Did you break the 200 mark with or without PV's?

 

[Wizards Powersports]

That's crazy it's burning that prop, what hull are you guys testing Godzilla in?

I'd guess either a VXR or WRIII?

 

[tntsuperjet]

The 880 wasn't legal with 152 bore center.
Yes TPE casting. 62t cases
Mr964, you want dyno sheets.

 

[tntsuperjet]

Lmao Ok so some of you guys don't know.
But years ago long before billet Cyl or any aftermarket Yamaha Cyl was available I built 800cc mechanical fuel injected nitrous wave III that went 66mph and crushed everyone at the blue water drags.
Keep in mind that doesn't sound fast by today's standard but the fastest production boat at that time was 42-45mph. The following year Yamaha came out with raider that went over 50mph