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Old 06-24-2008, 03:47 PM   #1
Power
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Default Darton slevees with JE Pistons

Hi

I must install the Je Pistons 100mm bore in darton slevees on my car..........I ask you a council...............Which is the best clearance that I can make between piston and cylinder ?
Can be Ok the clearance advised from Je Pistons or is better big clearance?

I would not want consume of oil for big clearance, and I would not want damage the pistons and cylinder for small clearance

Someone has experience?

Help me
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Old 06-24-2008, 03:49 PM   #2
sts2689
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That was confusing reading your thread. Just to let you know
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Old 06-24-2008, 04:01 PM   #3
Power
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Sorry for my disastrous english

An example:
The constructor Je pistons council a clearance 0,06 mm for standard Subaru block (without Sleeves)
With Darton sleeves installed is better 0,08mm or I can maintain 0,06 mm ?

Thanks
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Old 06-24-2008, 04:40 PM   #4
fujiillin
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Check out the Built Motor Forum, probably some good info in there.
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Old 06-24-2008, 04:57 PM   #5
flycaster
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Your piston to sidewall (cylinder) clearance will depend on your power and application, and your piston type. Most piston manufacturers will send you 2618 pistons that will give you approximately .003" (0,076 mm) clearance, assuming your sleeves are perfect. That is usually more than enough, but if you intend to use Nitrous or extremely high boost, it may not be. If you're intending to build for smaller power, and won't road race the car, you can get away with .0025" (0,064 mm). And, if you're using 4032 pistons, you can run clearances a little tighter still

Hope this helps - good luck.

Last edited by flycaster; 06-24-2008 at 05:04 PM.
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Old 06-24-2008, 10:34 PM   #6
Rickyh
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Quote:
Originally Posted by sts2689 View Post
That was confusing reading your thread. Just to let you know
What was confusing about it? So his grammer was a little off. Give him a break.

grammer nazis
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Old 06-25-2008, 02:37 PM   #7
Power
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Quote:
Originally Posted by flycaster View Post
Your piston to sidewall (cylinder) clearance will depend on your power and application, and your piston type. Most piston manufacturers will send you 2618 pistons that will give you approximately .003" (0,076 mm) clearance, assuming your sleeves are perfect. That is usually more than enough, but if you intend to use Nitrous or extremely high boost, it may not be. If you're intending to build for smaller power, and won't road race the car, you can get away with .0025" (0,064 mm). And, if you're using 4032 pistons, you can run clearances a little tighter still

Hope this helps - good luck.
Thank you very much Flycaster

I understand
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Old 06-25-2008, 07:14 PM   #8
flycaster
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Excellent. This is difficult in another language, I know. Remember, you can always email the piston manufacturer for more advice, but be aware they will always give you very conservative numbers (larger clearance than necessary).

Tell us what you are building. We like to hear about what other people are doing, especially in other countries - you may be able to teach us something!
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Old 06-26-2008, 03:11 PM   #9
Power
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Thank you Fly

Sorry but I don't spek english very well, and I write with consulting the traductor Babelfish..........many many times for Write three or four words
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