Installing 0.5mm Oversize JE-Pistons
04-24-2005, 06:50 AM
#1
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Installing 0.5mm Oversize JE-Pistons
After consuming a large amount of oil 1l/1000km I have started to overhaul my VTR.
These are the pictures of the deassembly:
stupid:
Old Pistons:
the new: (waited for long, very long)
These are the pictures of the deassembly:
stupid:
Old Pistons:
the new: (waited for long, very long)
04-24-2005, 07:44 AM
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Re: Installing 0.5mm Oversize JE-Pistons
I have also replaced the exhaust pipes, the front brake line with steel winded ones, Dynojet kit, chain and sprokets (standard size).
I already had a K&N filter an WP front springs.
I did not make a large trip becouse i'm still waiting for my licence plate.
milage was about 22000miles (35000km)
04-24-2005, 11:04 AM
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Re: Installing 0.5mm Oversize JE-Pistons
Excelent, thanks for taking the time to 'photo document' the rebuild and giving us a peek inside.
Congradulations on a job well done.
~Jeffers
Congradulations on a job well done.
~Jeffers
04-26-2005, 12:40 AM
#7
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Re: Installing 0.5mm Oversize JE-Pistons
wow... awsome post, My guess is you have done this kind of thing before.... I would have had one of those boxes still full of "leftover" bits if i did that : )
Interested to hear how much different it goes.
Interested to hear how much different it goes.
04-28-2005, 09:56 AM
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Re: Installing 0.5mm Oversize JE-Pistons
Now its has the jetting witch is on the Dynojet instruction. F 185 R 190 and the needles on 4 (K&N filter and open exhaust)
Dyna results will be posted here!
This was by the way the first time I did a complete overhaul of a motorcycle. Learnd mutch.
05-01-2005, 10:05 AM
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Re: Installing 0.5mm Oversize JE-Pistons
hehehe, have to say it : i hope you didnt overheat the engine seeing how you left your coolant cap off in the second picture of the "clickable pictures" hheheh (joke) 8)
http://users.pandora.be/VTR1000F/VTR_PICS/100_0792.JPG
http://users.pandora.be/VTR1000F/VTR_PICS/100_0792.JPG
05-02-2005, 06:50 AM
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hehehe, have to say it : i hope you didnt overheat the engine seeing how you left your coolant cap off in the second picture of the "clickable pictures" hheheh (joke) 8)
http://users.pandora.be/VTR1000F/VTR_PICS/100_0792.JPG
http://users.pandora.be/VTR1000F/VTR_PICS/100_0792.JPG
05-02-2005, 07:57 AM
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Re: Installing 0.5mm Oversize JE-Pistons
hehehe, have to say it : i hope you didnt overheat the engine seeing how you left your coolant cap off in the second picture of the "clickable pictures" hheheh (joke) 8)
http://users.pandora.be/VTR1000F/VTR_PICS/100_0792.JPG
http://users.pandora.be/VTR1000F/VTR_PICS/100_0792.JPG
05-02-2005, 02:14 PM
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Re: Installing 0.5mm Oversize JE-Pistons
over flow cap(yeah yeah) , striaght out of the garage... i know, it was only something to chuckle at guys... relax :wink: (hence the word "joke" in the aforementioned paragraph 8)
06-04-2005, 09:30 AM
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Re: Installing 0.5mm Oversize JE-Pistons
Hey,
I've went to a dynobank and this is the result:
116.8 rear weel Hp!
The red line is when I richen my needles, helps the dip at 4200 rpm but screws the top!
I've went to a dynobank and this is the result:
116.8 rear weel Hp!
The red line is when I richen my needles, helps the dip at 4200 rpm but screws the top!
How bout those Moriwaki cams?
06-05-2005, 09:34 AM
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Re: Installing 0.5mm Oversize JE-Pistons
I've asked for the dyno print with torque curve and I'm hoping to get it next week.
07-22-2005, 12:36 PM
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Re: Installing 0.5mm Oversize JE-Pistons
Great documentation. I'm noticing a lot of oil consumption (1 qrt/1500 miles) and have been wondering if this was the solution. A lot of work, looks like, and probably not cheap either. But it must feel like quite an acomplishment. My bike's got 40K miles on it - dive in?
I'm not interested in boosting compression or topping out the performance - should I go with OEM parts, or are aftermarket parts made to tighter tolerances?
I'm not interested in boosting compression or topping out the performance - should I go with OEM parts, or are aftermarket parts made to tighter tolerances?
07-23-2005, 04:50 AM
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Re: Installing 0.5mm Oversize JE-Pistons
Great documentation. I'm noticing a lot of oil consumption (1 qrt/1500 miles) and have been wondering if this was the solution. A lot of work, looks like, and probably not cheap either. But it must feel like quite an acomplishment. My bike's got 40K miles on it - dive in?
I'm not interested in boosting compression or topping out the performance - should I go with OEM parts, or are aftermarket parts made to tighter
tolerances?
I'm not interested in boosting compression or topping out the performance - should I go with OEM parts, or are aftermarket parts made to tighter
tolerances?
The Je-pistons were made very nice, tolerances perfect. I think the Honda ones will also be good.
Only I found the costs al little too much for, in case of the OEM pistons, having a standard bike after all the work.
Although the oversize JE psitons are not cheap!
08-13-2005, 08:19 PM
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Re: Installing 0.5mm Oversize JE-Pistons
Awesome write up. Im thinking about doing the same thing to mine but adding some cams to the mix. I was wondering how much time you spent on the whole process and if you dont mind about how much did it cost including the head work and parts?
08-13-2005, 09:02 PM
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Anyone know how to figure out the displacement increase with 0.5mm oversize pistons?
You could order vinyl replacement number decals of the new displacement ,
ala exotic Ducati 851,888, etc
~Jeffers
You could order vinyl replacement number decals of the new displacement ,
ala exotic Ducati 851,888, etc
~Jeffers
08-14-2005, 06:16 AM
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Re: Installing 0.5mm Oversize JE-Pistons
It has taken me about 8 hours to take the engine out of the frame,
1 day (8h) of desmanteling the engine.
It has been away about 2 weeks for the bore.
1 day engine reassambly and 1 day taking it back into the frame.
Costs: 4 pistons: +/- €800
bore: €200
gaskets etc: +/- €250
engine desplacement: bore² * pi/4 * stroke * 2(#cil)
thats 995,6712429 for the standard VTR bore 98 stroke 66
and 1005,857072 for the 98.5 bore
makes 1006cc not so great number for decals i think. (if it was 999 I would concederate it!)
1 day (8h) of desmanteling the engine.
It has been away about 2 weeks for the bore.
1 day engine reassambly and 1 day taking it back into the frame.
Costs: 4 pistons: +/- €800
bore: €200
gaskets etc: +/- €250
engine desplacement: bore² * pi/4 * stroke * 2(#cil)
thats 995,6712429 for the standard VTR bore 98 stroke 66
and 1005,857072 for the 98.5 bore
makes 1006cc not so great number for decals i think. (if it was 999 I would concederate it!)
08-24-2005, 02:33 PM
#27
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Re: Installing 0.5mm Oversize JE-Pistons
where do you guys find these JE 0.5 mm oversized pistons? i jsut checked out the JE catalog, and all it says is stock size pistons. is the 0.5 mm over size from stock a special order, or what? about how much were they?
08-24-2005, 02:50 PM
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Re: Installing 0.5mm Oversize JE-Pistons
They costed me €800 to get them to belgium. (4#)
