LotusTalk - The Lotus Cars Community - View Single Post

robains · 04-20-2009, 01:46 PM

As per my other engine thread. I'll add my compression test results to this one:

190 - 185 - 180 - 190

This is with Mahle 9:1 pistons.

Also noted that with all plugs OUT, throttle open/closed made no difference in the readings. Clutch in/out also made no difference.

I think what could cause the biggest variance in readings is how well one secures the compression tube in the spark plug hole. Small dab of oil on the rubber seal is pretty good at ensuring a good seal and more accurate readings.

5 or 6 cranks worked well for me.

Rob.

04-20-2009, 01:46 PM	#22 (permalink)
robains 2007 Exige S Join Date: Jul 2007 Location: CA, Bay Area Posts: 1,820	As per my other engine thread. I'll add my compression test results to this one: 190 - 185 - 180 - 190 This is with Mahle 9:1 pistons. Also noted that with all plugs OUT, throttle open/closed made no difference in the readings. Clutch in/out also made no difference. I think what could cause the biggest variance in readings is how well one secures the compression tube in the spark plug hole. Small dab of oil on the rubber seal is pretty good at ensuring a good seal and more accurate readings. 5 or 6 cranks worked well for me. Rob. __________________ '07 Exige S (Track Pack & LSD) + EFi 550ci injectors + Mahle 9:1 + DRS Port + SuperTech Valves + Weapon R Header + 2.9" pully + TODA Clutch + FF Engine Damper + RLS IC + Greddy catch cans + opened roof slot + RTD brace + Milled steering arms + Larini 8" + FF air intake + Moroso oil pan + Ultradisc 2 piece front/rear + Reverie 1650mm wing + ReVerie front splitter + IQ3 Dash + 4pt ASM + Pioneer AVIC-N2 nav + rear camera + RAC monolites 888s 195/225 + Lotus LSS Hoosier R6 205/225 @ 1921 lbs