Moriwaki Stage I engine
08-27-2012 | 06:00 AM
#31
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I had queried Roger about this a while back and he stated that the stock CCTs are fine so long as you don`t do the following:
- let it idle for long periods on sidestand
- long deceleration runs (compression braking)
as neither of these are typical on a race or trackbike, he said they are fine iin such applications....
- let it idle for long periods on sidestand
- long deceleration runs (compression braking)
as neither of these are typical on a race or trackbike, he said they are fine iin such applications....
08-27-2012 | 09:04 AM
#33
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welcome VeeTR.......post some pics of your ride.
08-27-2012 | 09:06 AM
#34
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I had queried Roger about this a while back and he stated that the stock CCTs are fine so long as you don`t do the following:
- let it idle for long periods on sidestand
- long deceleration runs (compression braking)
as neither of these are typical on a race or trackbike, he said they are fine iin such applications....
- let it idle for long periods on sidestand
- long deceleration runs (compression braking)
as neither of these are typical on a race or trackbike, he said they are fine iin such applications....
08-27-2012 | 11:13 AM
#35
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I don`t either and never adn a problem with the OEM CCTs (though I did do a preventive swap to new OEM CCTs a few years back). I am currently running manual CCTs for the sole reason that with the time, money and effort I have invested in my engine, I do not want to take any chance of them failing.
08-27-2012 | 12:33 PM
#36
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About all I will add is that yes I have replaced my auto CCTs a couple of times now, so if you do want to run auto's you do need to stick to the service\replacement intervals.
So back on topic, what exhaust system was run when the engine was dyno'd?
Also was the engine installed into a frame and run in on the dyno or was it run on an engine dyno to get the charts?
So back on topic, what exhaust system was run when the engine was dyno'd?
Also was the engine installed into a frame and run in on the dyno or was it run on an engine dyno to get the charts?
08-27-2012 | 01:46 PM
#37
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From: Westerly, RI
About all I will add is that yes I have replaced my auto CCTs a couple of times now, so if you do want to run auto's you do need to stick to the service\replacement intervals.
So back on topic, what exhaust system was run when the engine was dyno'd?
Also was the engine installed into a frame and run in on the dyno or was it run on an engine dyno to get the charts?
So back on topic, what exhaust system was run when the engine was dyno'd?
Also was the engine installed into a frame and run in on the dyno or was it run on an engine dyno to get the charts?
08-27-2012 | 02:21 PM
#38
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From: South of Live Free or Die & North of Family Guy
08-27-2012 | 02:35 PM
#39
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About all I will add is that yes I have replaced my auto CCTs a couple of times now, so if you do want to run auto's you do need to stick to the service\replacement intervals.
So back on topic, what exhaust system was run when the engine was dyno'd?
Also was the engine installed into a frame and run in on the dyno or was it run on an engine dyno to get the charts?
So back on topic, what exhaust system was run when the engine was dyno'd?
Also was the engine installed into a frame and run in on the dyno or was it run on an engine dyno to get the charts?
08-27-2012 | 03:50 PM
#41
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From: Westerly, RI
Well, I wrote Roger, tried to ask all the questions, he answered promptly. I'll post the whole email.
Hi Erik
**Please scroll down to find some comments below.
**Hope they help
I will keep in touch and speak to you soon
Regards
Roger
-----Original Message----- From: Erik
Sent: Monday, August 27, 2012 9:00 PM
To: Roger Ditchfield
Subject: Questions regarding the engine
Roger,
Good afternoon, I hope this finds you well.
I am OK thank you
I am a member of the online community for the Firestorm/Superhawk. *I've told them about the engine and they have asked some brilliant questions, and I was hoping I could pick your brain.
No problem
What type of exhaust should be run with this engine? *Is stock satisfactory?
You MUST use a quality Slip-on at least. A full exhaust would be even better. Standard cans will seriously subdue the power output as do the type of canisters you can buy with removable baffles if the baffles are not removed
Will additional bracing be required on the frame? *I have a braced swing arm that will be installed.
There is NOT a need to do this. The Revolution ST3 Superbike (producing 152bhp @R/Wheel) had a strengthened frame and I will give you details of that if you decide you want to do it.
You mention "custom carbs", what type are they?
Moriwaki special magnesium carbs with special internals
You mention that the stock air box is adequate for street/track days
It is adequate provided you remove the airbox lid and use K&N Filter. I will give you details of this if you wish.
We had equal length velocity stacks machined. *Would you recommend using them, or the stock velocity stacks?
Your equal length Stacks will be fine
Finally, are those hp and torque numbers at the wheel or on an engine dyno?
The figures and graphs for torque etc were achieved at the REAR WHEEL on an indepedant Dyno on the last engine I built to the exact specification as the one you are buying
Hopefully, I'm not being too much of a bother. *Thank you for your time and patience.
You are absolutely no bother at all. Please ask any questions you like and I will answer them if I can
Regards,
Erik
**Please scroll down to find some comments below.
**Hope they help
I will keep in touch and speak to you soon
Regards
Roger
-----Original Message----- From: Erik
Sent: Monday, August 27, 2012 9:00 PM
To: Roger Ditchfield
Subject: Questions regarding the engine
Roger,
Good afternoon, I hope this finds you well.
I am OK thank you
I am a member of the online community for the Firestorm/Superhawk. *I've told them about the engine and they have asked some brilliant questions, and I was hoping I could pick your brain.
No problem
What type of exhaust should be run with this engine? *Is stock satisfactory?
You MUST use a quality Slip-on at least. A full exhaust would be even better. Standard cans will seriously subdue the power output as do the type of canisters you can buy with removable baffles if the baffles are not removed
Will additional bracing be required on the frame? *I have a braced swing arm that will be installed.
There is NOT a need to do this. The Revolution ST3 Superbike (producing 152bhp @R/Wheel) had a strengthened frame and I will give you details of that if you decide you want to do it.
You mention "custom carbs", what type are they?
Moriwaki special magnesium carbs with special internals
You mention that the stock air box is adequate for street/track days
It is adequate provided you remove the airbox lid and use K&N Filter. I will give you details of this if you wish.
We had equal length velocity stacks machined. *Would you recommend using them, or the stock velocity stacks?
Your equal length Stacks will be fine
Finally, are those hp and torque numbers at the wheel or on an engine dyno?
The figures and graphs for torque etc were achieved at the REAR WHEEL on an indepedant Dyno on the last engine I built to the exact specification as the one you are buying
Hopefully, I'm not being too much of a bother. *Thank you for your time and patience.
You are absolutely no bother at all. Please ask any questions you like and I will answer them if I can
Regards,
Erik
08-27-2012 | 03:53 PM
#42
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From: Lake View Terrace, CA
08-27-2012 | 08:30 PM
#44
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From: Westerly, RI
08-27-2012 | 08:40 PM
#46
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From: South of Live Free or Die & North of Family Guy
08-28-2012 | 04:45 PM
#48
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From: South of Live Free or Die & North of Family Guy
08-28-2012 | 09:08 PM
#54
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From: South of Live Free or Die & North of Family Guy
Did Roger said what other options you can use instead? You can
use your stock carbs with a jet kit? I know it's not as great as the set he got, but maybe you can get close enough.
use your stock carbs with a jet kit? I know it's not as great as the set he got, but maybe you can get close enough.
Last edited by NHSH; 08-28-2012 at 09:13 PM.
08-28-2012 | 09:36 PM
#55
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You can make good power with the stock carbs. I can send you a PM with my STG1 baseline settings if you would like
08-28-2012 | 09:38 PM
#56
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From: Westerly, RI
The Moriwaki carbs were magnesium bodies for lightness but are identical to the production carb bodies and they had spun aluminium air stacks (funnels) instead of the plastic OEM ones. They also had different needles, slide springs (heavier) and jet sizes but that is all. They were HUGELY expensive as they were virtually hand made and I actually do have a set with additional jet and needle kit in stock but the Moriwaki Recommended Retail Price is £1250.00 GBP!!!!! It is very unlikely that I will ever sell them!!
*** Using the Standard OEM carbs with a Dynojet Kit you can achieve the same performance especially as you have already got Aluminium air stacks.
*** Using the Standard OEM carbs with a Dynojet Kit you can achieve the same performance especially as you have already got Aluminium air stacks.
08-28-2012 | 11:36 PM
#57
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From: altoona, pa
it would be interesting to know if mr ditchfield has all his firestorm/SH wisdom written down somewhere so that we might add it to our knowledge base. I did his fork mods years ago and i got the info from someone like you who had contact with him. Please ask him if this is possible in your next correspondence.
08-29-2012 | 10:12 AM
#60
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Joined: Jul 2011
Posts: 1,457
From: South of Live Free or Die & North of Family Guy
it would be interesting to know if mr ditchfield has all his firestorm/SH wisdom written down somewhere so that we might add it to our knowledge base. I did his fork mods years ago and i got the info from someone like you who had contact with him. Please ask him if this is possible in your next correspondence.
