November 21st, 2014, 04:11 PM | #201 |
KAWASAKI GURU
Name: Shawn
Location: Florida
Join Date: Jul 2013 Motorcycle(s): Turbo Ninja 250 Posts: 863
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Just on N/A bikes running 190-200hp we see 8-10hp
So you may only see a 2hp gain if you are looking t the same percentage. If you have ever used MR12 on the bike you will see about the same gain. E85 is 104 octane though so its great for high compression/nitrous/turbo My turbo buss went from making 260hp to 290hp on E85! The Turbo 250 is home from the fabricator so I'll have her boosting soon :-) |
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November 22nd, 2014, 06:18 AM | #202 |
Freedom for Germany
Location: This World
Join Date: May 2011 Motorcycle(s): Ninja 250R-FI Posts: A lot.
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November 22nd, 2014, 11:50 AM | #203 | |
modaholic junkie
Name: Nick
Location: Athens, Greece
Join Date: Sep 2012 Motorcycle(s): 2001 ZX-12R, 2009 ninja 345cc and plenty of others in the past... Posts: 438
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Quote:
https://www.ninjette.org/forums/showthread.php?t=187156 check it out Bruce... I think the price is good but p&p along with taxes to get to the States might make it an expensive option...
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December 3rd, 2014, 04:37 PM | #204 |
ninjette.org member
Name: Michael
Location: Tehachapi, CA
Join Date: Oct 2014 Motorcycle(s): 2014 Ninja 300 Posts: 160
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DO NOT USE COPPER GASKETS IN A WATER COOLED ENGINE!!!!!!!!!! They seal compression VERY well but they leak oil and water like a sieve! All I do monday-friday is help people build drag bike engines. If they tell me it will be a track only oil/air cooled bike, copper and o-ringed cylinders. If its water cooled, or ridden on the street at all, it better be a multi-layed steel. Call Cometic, they can stamp you out a thicker base gasket, and a good head gasket. Spacing up they cylinder is the better option over a thicker head gasket. As long as you have proper torque and a perfectly clean and flat surface your head gasket should hold.
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December 3rd, 2014, 05:05 PM | #205 |
ninjette.org certified postwhore
Name: Eric
Location: Iowa City
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What about spraying the gasket with a coper tack adhesive ? Then let it dry. I have used this on used steel gaskets with great success. I run a nitrous bike and sometimes have to use what I have.
I have never used copper gaskets by it I have some. They are to thick for my needs. But I never heard anyone say they would not hold water and oil. I do believe you. Just never heard it before.
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Top speed 123.369mph. Ohio mile Worlds fastest 250 ninja |
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December 3rd, 2014, 07:33 PM | #206 |
Freedom for Germany
Location: This World
Join Date: May 2011 Motorcycle(s): Ninja 250R-FI Posts: A lot.
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Copper gaskets normally are used in racing sports only and here's a quick-guugle-translation from a german producer:
1. The sealing surfaces of cylinder and head made must be absolutely clean and flat. Minimum distortion may later affect the tightness. We recommend to plan both parts before assembly with low material removal. 2. Before the head gasket can be used, it must be annealed. This is most easily when the seal is placed on a non-combustible and clean surface (or similar gas burner) by means of a flame is heated to incandescence. CAUTION: glowing copper has a temperature of about 600° C. Cooling can be done where copper is also by rapid cooling has no hardening effects as steel. However, rapid cooling can lead to distortion and should therefore be avoided. 3. Blazing Copper reacts with atmospheric oxygen and forms a layer of copper. So that the seal thereby does not stick to the cylinder or head made again and remains usable, they should before assembly with a Heat-resistant release agent and lubricant (eg Würth CU800) are sprayed. I hope it's to understand. |
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December 5th, 2014, 04:38 PM | #207 |
ninjette.org sage
Name: bruce
Location: northern illinois
Join Date: Jan 2012 Motorcycle(s): Race bikes:08 Ninja 250,11 R6,16 ZX6,SV650.3 HD-1947,2-2003,2010. 1946 Indian and a lot of dirt bikes.2 Posts: 999
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Here's my experience with copper gaskets; I run big bore Suzuki SV 650s. Anything over 2 millimeters overbore and you need to run a copper gasket. We do use a peratex spray on them during assembly. We do reuse them,we anneal them at 400° and then let them air cool. Big bore SV 650s have problems with any head gasket you use on them, just less with the copper. I am still working on figuring this overheat issue out but as the race season has ended here for a few months I will take that time to get it dialed in.
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September 28th, 2015, 12:41 PM | #208 |
ninjette.org sage
Name: bruce
Location: northern illinois
Join Date: Jan 2012 Motorcycle(s): Race bikes:08 Ninja 250,11 R6,16 ZX6,SV650.3 HD-1947,2-2003,2010. 1946 Indian and a lot of dirt bikes.2 Posts: 999
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Well its been a while since I have had time to sort this bike out. I set the squish at .041" which has dramatically lowered cylinder pressure. Raced it all weekend without blowing the head gasket. I also took the advanced flywheel key out and ran the stock one, so less timing too. The bike ran well, didn't pull as hard to the rev limiter so I short shifted it to make use of the mid range torque. I did put a bigger radiator on it, I can not tell what it is off of as I found it at a swap meet. Ran a temp guage on it as well, coolant temp stayed right at 180 degrees.
So in comparison to other bikes? I beat every KTM390 (4 on the grid) every ninja 300 (3), one yamaha R3, Ninja 250"s aren't a challenge,1 Aprillia 250 cup, bike, 1 electric bike, 1 Hawk, Raced up into the lightweight field and waxed an air cooled Buell and several ametuers on SV650's. |
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September 28th, 2015, 01:33 PM | #209 | |
Rev Limiter
Name: Jay
Location: WI
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Quote:
Was Jeff on the R3? Congrats. |
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September 28th, 2015, 05:13 PM | #210 |
Board Member
Name: ...
Location: WI
Join Date: Dec 2011 Motorcycle(s): 250R (street), 250R (dirt) Posts: A lot.
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Nice. I too think the riders had a lot to do with that mix.
You should get it to the dyno and post those numbers! |
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September 28th, 2015, 05:52 PM | #211 | |
ninjette.org guru
Name: Kevin
Location: Madison
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Quote:
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September 28th, 2015, 06:35 PM | #212 |
ninjette.org sage
Name: bruce
Location: northern illinois
Join Date: Jan 2012 Motorcycle(s): Race bikes:08 Ninja 250,11 R6,16 ZX6,SV650.3 HD-1947,2-2003,2010. 1946 Indian and a lot of dirt bikes.2 Posts: 999
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September 28th, 2015, 06:38 PM | #213 |
ninjette.org sage
Name: bruce
Location: northern illinois
Join Date: Jan 2012 Motorcycle(s): Race bikes:08 Ninja 250,11 R6,16 ZX6,SV650.3 HD-1947,2-2003,2010. 1946 Indian and a lot of dirt bikes.2 Posts: 999
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That's a good ? I would say in that category the KTM. My son was out there on his cup bike with the throttle limiter for MA and he bettered my lap times.
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September 28th, 2015, 07:34 PM | #214 |
EX500 full of EX250 parts
Name: Bill
Location: Grand Rapids-ish, MI
Join Date: Jul 2012 Motorcycle(s): '18 Ninja 400 • '09 Ninja 500R (selling) • '98 VFR800 (project) • '85 Vulcan VN700 (sold) Posts: A lot.
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If you're still looking for cooling options, there were some Suburbans (I think older ones) that had heater cores in the rear, with fans attached to them. Some of the SyTy guys used them as aux radiators for the intercooler system. They were sized to fit well near the foglight openings if I remember correctly, so they might be a bit small to use as a main radiator.
I found http://wayback.archive.org/web/20050...CCHE_mods.html using a '77 Suburban heater core, but it doesn't seem to have the fans included. It actually looks like it's a decent size, compared to the front end of an S-truck. The VFR800 has dual radiators mounted along the side, with the fairing ducting air in from the front-center and out-back through the radiators. (Recognize that tail?) I know the VFR is very different, but maybe it could work to set up two smaller radiators (like heater cores) more toward the side like that. I have very little actual experience in this department, I'm just tossing out options that might trigger someone who knows something to figure out some great idea...
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September 29th, 2015, 04:57 AM | #215 | |
modaholic junkie
Name: Nick
Location: Athens, Greece
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Quote:
you did the right figure about squish, will be safe and sound that way... the lack of appetite for top revving is mostly because you're usinh the 250 head with the small intake valves and the cam duration... switching to wilder cams and bigger intake valves or a whole 300 head will make it unbeatable... but keep it that way for a while, no need to take it apart now that you got it right...
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September 29th, 2015, 06:11 AM | #216 |
Fighting Texas Aggie '05
Name: Neil
Location: Hutto, TX
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The bikes with the fastest riders on them .......
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September 29th, 2015, 10:38 AM | #217 | |
Board Member
Name: ...
Location: WI
Join Date: Dec 2011 Motorcycle(s): 250R (street), 250R (dirt) Posts: A lot.
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September 29th, 2015, 01:03 PM | #218 |
ninjette.org member
Name: Michael
Location: Tehachapi, CA
Join Date: Oct 2014 Motorcycle(s): 2014 Ninja 300 Posts: 160
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It very well should. I think there are a couple minor differences in the gasket but should still line up. It has larger runners and matching intake boots as well.
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September 29th, 2015, 01:17 PM | #219 |
Rev Limiter
Name: Jay
Location: WI
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cuong put this together a while back highlighting the differences between the 250 and 300 engines. Some significant internal changes were made - https://www.ninjette.org/forums/show...00+differences
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September 29th, 2015, 02:39 PM | #220 |
ninjette.org sage
Name: bruce
Location: northern illinois
Join Date: Jan 2012 Motorcycle(s): Race bikes:08 Ninja 250,11 R6,16 ZX6,SV650.3 HD-1947,2-2003,2010. 1946 Indian and a lot of dirt bikes.2 Posts: 999
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September 29th, 2015, 02:43 PM | #221 |
ninjette.org sage
Name: bruce
Location: northern illinois
Join Date: Jan 2012 Motorcycle(s): Race bikes:08 Ninja 250,11 R6,16 ZX6,SV650.3 HD-1947,2-2003,2010. 1946 Indian and a lot of dirt bikes.2 Posts: 999
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September 29th, 2015, 02:49 PM | #222 | |
ninjette.org sage
Name: bruce
Location: northern illinois
Join Date: Jan 2012 Motorcycle(s): Race bikes:08 Ninja 250,11 R6,16 ZX6,SV650.3 HD-1947,2-2003,2010. 1946 Indian and a lot of dirt bikes.2 Posts: 999
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Quote:
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September 29th, 2015, 02:53 PM | #223 | |
ninjette.org sage
Name: bruce
Location: northern illinois
Join Date: Jan 2012 Motorcycle(s): Race bikes:08 Ninja 250,11 R6,16 ZX6,SV650.3 HD-1947,2-2003,2010. 1946 Indian and a lot of dirt bikes.2 Posts: 999
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Quote:
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September 29th, 2015, 06:45 PM | #224 |
Rev Limiter
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Location: WI
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