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-   -   How does your built motor sound when it is cold? (https://www.miataturbo.net/engine-performance-56/how-does-your-built-motor-sound-when-cold-53430/)

Faeflora 11-09-2010 10:57 PM

How does your built motor sound when it is cold?
 
How does your built motor sound when it is cold, before it warms up?

I need data data data. Please also post your motor build if it is not in your signature.

Mine squeaks. And taps a bit.

ALSO POST THE AMBIENT COLD TEMPERATURE. 20F is different from balmy 65F

jtothawhat 11-09-2010 11:38 PM

Mine is quite, like stock.

FM Pistons w/coated skirts
Carrillo H Beams

etc etc

Stealth97 11-09-2010 11:42 PM

quiet as it is hot

18psi 11-09-2010 11:44 PM

same as when its hot

JasonC SBB 11-10-2010 12:30 AM

No unusual sounds. Supertech pistons.
My Honda Civic OTOH with 100k miles, has some slappy sounds for the first minute or so.

Faeflora 11-10-2010 12:35 AM


Originally Posted by jtothawhat (Post 655199)
Mine is quite, like stock.


Originally Posted by Stealth97 (Post 655200)
quiet as it is hot


Originally Posted by 18psi (Post 655201)
same as when its hot

All of you. I am going to shit on your face.

Curious- what is the ambient temperature in your area? "cold" can be quite a variance.

Savington 11-10-2010 12:56 AM

Identical to when it's hot. I haven't started it under 50*F recently.

thesnowboarder 11-10-2010 02:19 AM

I started mine ~40* or so once, runs just fine and sounds like normal, maybe better. My only difference is coolant temp takes longer to come up.

hf-mx5t 11-18-2010 11:22 AM

http://www.youtube.com/watch?v=G24unfFNa6o

halfway between cold and hot, but the sound does not change much..

hustler 11-18-2010 12:30 PM

Sounds normal but idles like shit since the IAC valve died.

thymer 11-18-2010 12:36 PM


Originally Posted by faeflora (Post 655179)
How does your built motor sound when it is cold, before it warms up?

I need data data data. Please also post your motor build if it is not in your signature.

Mine squeaks. And taps a bit.

ALSO POST THE AMBIENT COLD TEMPERATURE. 20F is different from balmy 65F

I get a little squeak and tap and goes away after warmup. Assumed the tap was a little piston slap, not sure about the squeak tough.

sixshooter 11-18-2010 01:34 PM

Mine sounds like an industrial grinder making small gravel out of large gravel. I thought it was normal for Miatas...



Stock 1.8 block, 120k mi.

j/k I have a little piston slap when it is cold, but that goes away when it begins to warm. It goes clickety clickety cold or warm just due to loose tolerances from wear. I'm sure the PO's didn't keep the oil refreshed as they should have. No biggie.

hustler 11-18-2010 01:36 PM

Check your valve lash (.03 on the intake, .06 on the exhaust on solid lifters), check torque on the cam gears, let us know how it goes.


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