Engine Test

Selecta · Post by **Selecta** » June 9th, 2005, 10:32 am

Hi there,

Had a quick question regarding motor test. I am going to get a ZE motor this weekend and was asking the shop what sort of tests they do on the engine. And they said they don't do compression test as it's not realiable on a cold motor. Instead they would be doing a leak down test to make sure the motor is good.

Just wanted to get your opinion on this if it's a load of bull or if it's legit. Thanks in advance for your assistance.

Uday

Tunes67 · Post by **Tunes67** » June 9th, 2005, 10:42 am

A leak down test is generally more reliable than a normal compression test.. their reasoning about not doing a compression test on a cold engine could be valid. Especially on engines with aluminum heads. Heat causes expansion and aluminum expands quite a bit.. so when the engine is cold, everything would be at its tightest point and a simple compression test might not reveal problems that a leak down test might.

Tunes67

Selecta · Post by **Selecta** » June 9th, 2005, 10:45 am

that is the same explanation they gave me so it seems they are on the up and up...thanx again

PATDIESEL · Post by **PATDIESEL** » June 10th, 2005, 2:07 pm

I'd ask them for a copy of the leak down test results. That way if you get the motor, install it, and it is crap you can have another shop do a leak down test and make sure it is not a compression issue. If it fails the test then you have recourse against the seller of the motor.

Selecta · Post by **Selecta** » June 10th, 2005, 3:01 pm

Oh ya there was no doubt I was going to get everything in writting. Also I told them once it's in and everything I would bring it back in for the compression test regardless and they have no problem with that.

Now all I have to do is get the KL3x ECU and a MAF

FrankenMazda · Post by **FrankenMazda** » June 12th, 2005, 12:44 am

Im really sorry about this but .... I cant post in buy/sell.

PATDIESEL, why havent you repponded to my email?

You responded just fine, until you received my $158, 10 days ago.
That has me troubled.

Mixup? Fine, ship my stuff. Respond to my email chris.dunster@gmail.com.

lakersfan1 · Post by **lakersfan1** » June 12th, 2005, 4:53 am

Selecta wrote: Now all I have to do is get ..... a MAF

Why? Don't you own an MX3?

Selecta · Post by **Selecta** » June 13th, 2005, 11:08 am

I do have a MX3..however I am getting the curved neck intake manifold and with the KL3x ECU would need to change my JE-50 VAF as it won't work with the ECU/Intake combo. At least that is what I have been lead to believe and read thus far.

But if I am mistaken please do let me know.

mxmaz · Post by **mxmaz** » June 13th, 2005, 11:15 am

Selecta wrote:I do have a MX3..however I am getting the curved neck intake manifold and with the KL3x ECU would need to change my JE-50 VAF as it won't work with the ECU/Intake combo. At least that is what I have been lead to believe and read thus far.

But if I am mistaken please do let me know.

no just use the je50 vaf. The kl31 or 36 ecu use a je50. The ecu is actually for a straight neck but works fine using the curved neck just the vris points would be off.

Selecta · Post by **Selecta** » June 13th, 2005, 11:38 am

really? and what would having the VRIS off really do? Also what does VRIS mean? hehehehehe

MX-3.com

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