Gutless?!?!?
05-27-2010, 03:22 PM
#26
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^^^4
Also not sure if anyone is up on compression levels but here is how it scored:
115.70, 122.67, 119.91 @ 273rpm
122.67, 133.25, 128.61 @ 273rpm
I was told that anything over 125 is considered high due to carbon deposits reducing volume.
Also not sure if anyone is up on compression levels but here is how it scored:
115.70, 122.67, 119.91 @ 273rpm
122.67, 133.25, 128.61 @ 273rpm
I was told that anything over 125 is considered high due to carbon deposits reducing volume.
05-27-2010, 04:08 PM
#27
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Hey - Just started driving an 8 I bought without motor or tranny and just got done installing a used motor and tranny. Its an auto with k&n and a cat delete pipe. This thing is gutless off the line up until maybe 3g - is this normal? Also at times around 5.5k and higher I get a creaking noise times - not sure if its like a rattle, chasis related - had some power plant frame issues, or if I didnt know better I'd say it almost sounds like predetonation (not sure what spark knock sounds like on these though). If its helpful I'm getting code P0336. Any info or insight much appreciated. Creaking bordering on chirping is a good description.
05-27-2010, 04:10 PM
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Had the compression checked and one is normal and one is high due to carbon build up. Also was informed there is a crankshaft learning process that needs to be done when engine is swapped. After changing plugs and crankshaft learning it seems to have less of a dead spot. For future readers note that these autos really are dogs. There is sort of a normal lag from 0-3k rpms and depending on whether the engine is tuned up 0-60s can range from like 8-12 seconds easily. Seemingly plugs and loose wires can make a huge difference.
Sounds like you could use a Seafoam treatment.
Maybe some additive like FP Plus with each fill up couldn't hurt either.
05-27-2010, 05:03 PM
#29
I call BS on that ...
Here is a good thread
https://www.rx8club.com/series-i-do-yourself-forum-73/diy-renesis-compression-adjustment-rating-excel-application-180043/
A tester you can buy
https://www.rx8club.com/showthread.p...ression+tester
06-04-2010, 08:40 PM
#32
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I'd also like to note for future readers that the creaking noise I refered to earlier was definetly predetonation! After getting the car tuned up properly and running several tanks of premium through it I tried to be a tight *** and go back to regular 87. Immediatly again under high rpms I got the noise and now that Im back to 92 its gone. So yea not good for motor atleast in my case to run regular. ie k&n and highflow cat. Spark plug wires made the most difference for me currently running solid 8-9 second 0-60s. Car still has too much vibration at when in drive at a stop though and the motor mounts are sound. Freakin raddles my side mirror.
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