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Discussion Starter · #1 ·
I was talking to my mechanic a few days ago about how we would investigate the power loss my dyno sheets have been showing.I've already checked the compression and the timing (both fine).He said we would start with a leak test and take it from there. I didn't have much time to ask him what was involved but I think it revolves around the I/H/E.
Anybody had this done? Whats involved?

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I've had one



I once had "leak" test when I started my last job!!!
First they give you a cup and then you go into a private Restroom and do your thing. Also...you can't flush the toilet, thats very important!!!


by the way, i'm an idiot.



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2000 Prelude Type SH
Premium Pearl White

MODS: AEM CAI, DC Header, Greddy PE Exhaust, Vitek Wires, AEM CamGears, AEM TruPwr Pulleys, UR Crank Pulley, Apexi V-AFC, ACT XT Clutch, DC ShortShift Adaptor, ZEX 55 Shot Nitrous

V-Spec Coilovers, DC Fr. Upper Strut Bar, CarbonFiber Hood, OEM Bodykit, 17" Nippon Racing/NittoNT555ZRs, Type S shiftknob........

[This message has been edited by o0OO0o (edited April 18, 2001).]
 

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If your talking about a leak down test then you need a special leak down tester. You screw it into where the spark plugs go and use an air compressor to pressurize the cylinder. The tester tells you the % leaking out. You can also listen for air comming out of the exuast, intake, crankcase, or radiator to tell you your problem. What where your compression test numbers?
 

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Discussion Starter · #4 ·
I had a local mechanic do that for me and he said it was perfect at 210
 

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<font face="Verdana, Arial" size="2">Originally posted by andrewdelvard:
I had a local mechanic do that for me and he said it was perfect at 210</font>
I don't believe that's perfect- I think for the base model it's 210- for the S it should be higher. Am I to assume the Type S pic in your sig isn't yours? : )
 

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Discussion Starter · #6 ·
No it's mine. I guess he looked at what the 'ordinary' 2.2 v-tec compression figure should be and assumed it was correct.
This is interesting. What do you think it should be?
 

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Whether its 210 or 220 its not going to drop your hp significantly. It more important that the numbers are close to equal for all cylinders.
 

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Discussion Starter · #8 ·
Just out of interest does fuel make a difference to compression ratios?
Here in the UK I'm able to get 97 octane from most petrol stations but in Japan it would use 99 octane.
 
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