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Chris Reinhardt
Joined: 29 Aug 2002
Posts: 2922
Location: United States, New York, Ossining
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 Posted: Thu Jan 17, 2013 12:27 pm Post subject: |
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| Jerry Clayton wrote: | First off I am a farm boy------------
and the only goal that I didn't achieve in life was becoming a astronaut altho I probably could be labeled a VICE ASTRONAUT---------- |
You said it brother!!!!
Did he mix you guys up? Maybe Sam is the convict? 
CR
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Last edited by Chris Reinhardt on Thu Jan 17, 2013 1:46 pm, edited 1 time in total |
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Steve Buckner
Joined: 22 Apr 2003
Posts: 839
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| Posted: Thu Jan 17, 2013 12:48 pm Post subject: |
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| Chris Reinhardt wrote: | I got one of these
I don't even check tire pressure!!!!
If it doesn't deto with your setup, it leaves the door wide open to lean it till it does, because now you don't have a head gasket to pop.
CR |
Now I know why you build a torque monster, look at that flywheel.  |
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Sam Zavaglia
Joined: 23 Nov 2004
Posts: 1181
Location: Australia, Sydney,
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| Posted: Thu Jan 17, 2013 2:45 pm Post subject: Re: Tired of blown head gaskets and ruined pistons? |
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| Andre Eriksen wrote: |
One ruined piston, head or even worse a cylinder, will easily pay for the CNC manufacturing
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Back to the very first post, to identify your issue, that is detonation first.
Detonation will eat at the squish of the piston and head. The first sign will show on the head gasket becuase it is weaker than the actual squish of the piston. It continues on the head gasket and squish of piston and top of cylinder.
In Japan, their 2T GP series was on Japan grade unleaded that was very prone to detonation. When their series moved from Leaded to Unleaded, they put brass inserts into the heads at Yamaha Japan, standard issue for the TZ. No longer did TZ heads come without brass insert!
So when it detonates again, the top of the cylinder would now eat away. Many used cylinders from Japan have brass inserts on the top of the cylinder, this means any detonation now will only limit damage to piston.
Andre, the oring design is for convenience of pulling the head off after every race is to check piston for tightly tuned 2T. If there is no detonation, you don't have a problem.
Try this as a change if allowed in your racing, run 110 leaded fuel without doing anything else, I'm sure your problem will be gone.
Or you can detune your engine for 98, pending your rules, more base gasket or 2x head gaskets and/or richer carb settings are things you may try.
Now when you see or talk to others with the same problem, remember they are on 98 fuel and they are in competition, where their tune needs to be on the edge (if they want to win), of course they will see detonation that leads to head gasket chewing away.....but that is their choice of tune, wouldn't matter if your setup was oring, with brass inserts cylinder and head, detonation is detonation and it does not care about these things. These things are to limit damage to it's components, especially if you have special ported cylinders and special head shape that took time and money.
Fuel is the easiest and most effective way to combat detonation, compression, ignition timing and water temp are all contributing factors.
As Jeff DeMello said earlier in one of his post 6 years without a single head gasket problem, I've done 3 years so far, I bet Jeff runs 110 leaded fuel without me even knowing. 110 Leaded is much harder to detonate over 98.
You need to stop your detonation from occurring.
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Sam Zavaglia
Joined: 23 Nov 2004
Posts: 1181
Location: Australia, Sydney,
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| Posted: Thu Jan 17, 2013 2:49 pm Post subject: Re: Tired of blown head gaskets and ruined pistons? |
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I do recall that some GP teams used to actually tune for detonation to last the race distance......myth or not 
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Jeff DeMello
Joined: 13 Sep 2002
Posts: 2213
Location: United States, Pittsburgh Pa,
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| Posted: Thu Jan 17, 2013 4:10 pm Post subject: |
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Sam you are correct I do use 110 Sunoco gas also the 3 others that started racing the stock Honda the same day as I did have never had head gasket problems. 1 year I ran 13 sprint races and 5-6 road race weekends all on the same head gasket.
I do like the o ring head as you said just to be able to pull the head and put back on but what's $10 for a head gasket.
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Jeff DeMello
Emmick F125 Pavesi |
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Chris Reinhardt
Joined: 29 Aug 2002
Posts: 2922
Location: United States, New York, Ossining
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| Posted: Thu Jan 17, 2013 5:26 pm Post subject: |
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| Steve Buckner wrote: | | Chris Reinhardt wrote: | I got one of these
I don't even check tire pressure!!!!
If it doesn't deto with your setup, it leaves the door wide open to lean it till it does, because now you don't have a head gasket to pop.
CR |
Now I know why you build a torque monster, look at that flywheel. |
Naah, the flywheel is titanium
CR
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East Coast Super Kart Series
"This is how we roll!"
www.eastcoastsuperkart.webs.com
CR2 Motorsports
"Home of Cobalt Superkarts"
www.CR2MotorSports.webs.com |
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Sam Zavaglia
Joined: 23 Nov 2004
Posts: 1181
Location: Australia, Sydney,
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| Posted: Thu Jan 17, 2013 6:51 pm Post subject: |
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Not to change the topic......
Chris,
I just noticed unless it's my eyesight in your blurred dyno picture, is that a HRC electric solenoid that activates a powerjet circuit onto a PWK carb that you have made?
If so, I'm thinking by the time you get the parts and do the work, the genuine HRC carbs have always been superior in karting application in every way and the cost of them are coming down in the 2nd hand market.
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Chris Reinhardt
Joined: 29 Aug 2002
Posts: 2922
Location: United States, New York, Ossining
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| Posted: Thu Jan 17, 2013 7:02 pm Post subject: |
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Good eyes Samuel... Actually just a stock CR250 PJ carb with a powerjet, just had it stuffed on there till my Swedetech double pumper came in 
CR
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East Coast Super Kart Series
"This is how we roll!"
www.eastcoastsuperkart.webs.com
CR2 Motorsports
"Home of Cobalt Superkarts"
www.CR2MotorSports.webs.com |
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Sam Zavaglia
Joined: 23 Nov 2004
Posts: 1181
Location: Australia, Sydney,
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| Posted: Thu Jan 17, 2013 8:41 pm Post subject: |
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Chris,
The CR125 on the dyno has it's head turned into a different position and one of it's water outlets blocked.
How do you get the air lock out of the head once it's bolted down to the dyno?
Don't go complaining about Honda quality if you start blowing head gaskets.
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Sam Zavaglia
Joined: 23 Nov 2004
Posts: 1181
Location: Australia, Sydney,
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| Posted: Thu Jan 17, 2013 8:47 pm Post subject: |
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Chris,
Your engine mount is too high at the back, the engine is tilted too far forward and that will push all the engine fluids toward the front of the engine causing damage. You should start shopping online to get a better engine mount.
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Matt Dixon
Joined: 21 May 2007
Posts: 531
Location: United States, California, Norcal
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| Posted: Thu Jan 17, 2013 8:55 pm Post subject: |
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Life must be boring down under.
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Matt Dixon
94y Energy Corse/Swedetech |
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Chris Reinhardt
Joined: 29 Aug 2002
Posts: 2922
Location: United States, New York, Ossining
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| Posted: Thu Jan 17, 2013 9:42 pm Post subject: |
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| Sam Zavaglia wrote: | Chris,
The CR125 on the dyno has it's head turned into a different position and one of it's water outlets blocked.
How do you get the air lock out of the head once it's bolted down to the dyno?
Don't go complaining about Honda quality if you start blowing head gaskets. |
There's a cap on one fitting with an H2O sender on it not shown. Motor mount works fine, there's a big impeller in there called a clutch basket that moves the oil around pretty good. Go check out the quick video I did on my webpage. Wondering how quick the pull will be with my CRF450 mounted on there.....
CR
_________________
East Coast Super Kart Series
"This is how we roll!"
www.eastcoastsuperkart.webs.com
CR2 Motorsports
"Home of Cobalt Superkarts"
www.CR2MotorSports.webs.com |
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Sam Zavaglia
Joined: 23 Nov 2004
Posts: 1181
Location: Australia, Sydney,
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| Posted: Thu Jan 17, 2013 9:45 pm Post subject: |
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| Matt Dixon wrote: | | Life must be boring down under. |
Right now life is boring, over 100F outside, hotter in the workshop, I'm staying in the air conditioning having fun behind the keyboard with my smiley faces instead
I should be much quieter tomorrow.....wait and see.
*** correction 114F outside. Now that is enough to blow a head gasket.
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Jimmy McNeil
Joined: 12 Apr 2006
Posts: 1457
Location: United States, California, visalia
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| Posted: Thu Jan 17, 2013 11:26 pm Post subject: |
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| Quote: | | Your engine mount is too high at the back, the engine is tilted too far forward and that will push all the engine fluids toward the front of the engine causing damage |
The Swedetech mount fixes that problem. |
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Chris Hegar
Joined: 25 Jun 2002
Posts: 3529
Location: United States, Oregon, Portland
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| Posted: Fri Jan 18, 2013 12:28 am Post subject: |
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You guys are funny's.
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