New T750 record is now over 62 mph.....TOHATSU

LittleCharger · **Joined:** April 1st, 2012, 12:29 am **Posts:** 1445

Andrew4ce wrote:

LittleCharger wrote:

Hounddog wrote:

LittleCharger wrote:

You running the toaster this year Don?

Yes Sir, Alex should have it ready. Ceramic pistons, ceramic sleeves and no rings. It can even run without a water pump. 62 should be easy beat.

Will it run on pump fuel with no water pump or too much combustion chamber heat?

Interesting tidbit... our 15hp... run hotter with the water pump. You only need the pump for idling (but pickup is in front of gearcase). In mod you remove the pump alltogether to help free up some hp.

In this case the ceramic doesn't absorb as much heat like a traditional piston and reflects the heat back into the combustion chamber thus higher temps and potential for detonation, that was my understanding.

Hounddog · **Joined:** April 3rd, 2012, 1:52 pm **Posts:** 3124

[quote="LittleCharger Will it run on pump fuel with no water pump or too much combustion chamber heat?[/quote]

I thought I would put than post out before one of the T850 racers did.
Our Toaster is pure stock. Has not even been rebuilt. Dave Scott has the one that is being blue printed. It will be interesting to see if? there is any difference. Dave thinks there will be because the casting are terrible and the sleeves worse.

The ceramic pistons and ceramic sleeves are not just a coating. They are the complete part. When you use both parts there is no change in their sizes due to heat. The chamber temp is 1200 to 1400 degrees. You can fit the piston with zero gap and you do not need rings. I was told to not worry about fuel. Old gas works best and gives a bigger bang, For the porting you can use an SST 60 sleeve and take the bridge out. That gives you even more performance than the oval port.
The cost is approximately $1132.17 US per hole. The one problem is fitting the sleeve without having it break.
Add a Gig billet head, flywheel and Curtis crank and your done.

hec2buck · **Joined:** August 22nd, 2013, 4:13 pm **Posts:** 273

Was this a kilo record set in Europe, or some local speed run with high pitch prop?

Hounddog · **Joined:** April 3rd, 2012, 1:52 pm **Posts:** 3124

hec2buck wrote:

:) Was this a kilo record set in Europe, or some local speed run with high pitch prop?

http://www.boatracingfacts.com/forums/s ... niston-(UK)-T750-Record&p=135067#post135067

FrenchPhil · **Joined:** April 12th, 2012, 6:30 pm **Posts:** 19

The kilo record was upped to 63.15mph.

Hounddog · **Joined:** April 3rd, 2012, 1:52 pm **Posts:** 3124

FrenchPhil wrote:

The kilo record was upped to 63.15mph.

FrenchPhil, do you know any of the details as to the make of boat etc.
This is a very large increase over the previous record.
Were any other records set at the same time trial?

Hounddog · **Joined:** April 3rd, 2012, 1:52 pm **Posts:** 3124

May have answered my own question.

Congratulations to Keith Whittle on a new F2 British Record with 128.05 mph !
Thu Nov 07 14:36:54

Congratulations also go to Colin Jelf for setting a new British GT30 speed record of 57.80 mph.

http://www.powerboatgp.co.uk/news-highlights/70

FrenchPhil · **Joined:** April 12th, 2012, 6:30 pm **Posts:** 19

Its during the Coniston record week, Nov 4-8
Twitter : https://twitter.com/recordsweek
Vids : http://cumbrialive.tv/

O850 world record 95.13 mph
GT30 world record 59.19 mph

LittleCharger · **Joined:** April 1st, 2012, 12:29 am **Posts:** 1445

Jason Brewer has increased his World and National Record in the T750 66.69mph

FrenchPhil · **Joined:** April 12th, 2012, 6:30 pm **Posts:** 19

F2 world record upped to 129.34mph !

HPBCANADA.COM

New T750 record is now over 62 mph.....TOHATSU

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