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> CHT temps, individual cylinder differences?
falcor75
post Apr 12 2018, 10:50 PM
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For those of you that are running 4 CHT sensors under the plugs, what differences do you see between the cylinders?

Whats your typical temps for each cylinder with:

A: Engine warmed up sitting at idle for a minute or two.

B: Engine warmed up, cruising at 50-55 mph in fifth gear.
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falcor75
post Apr 20 2018, 08:08 AM
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Had a 40 minute drive today, starting with slower traffic and then a bit of 55 mph freeway in 4th gear before refueling after the winter and then a few minutes of 3200 rpm in fifth gear. CHT temps were around 285-290 for all cylinders except #2 that still reads in the 245-250 range.

Adjusting the throttle linkage and idle air seems to have smoothed out the temps over cylinders 1, 3 and 4 so at least a partial success. Hopefully I'll get some cruising tuning done in the next weeks and then enjoy a summer of more driving and less wrenching.

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On the way home we stopped at a local landmark over some 17th century field marshal and snapped a few photos. Its been so cold this spring that the grass has barlely turned green yet. First day this year with temps above 70 F.
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falcor75   CHT temps, individual cylinder differences?   Apr 12 2018, 10:50 PM
Porschef   :popcorn: :beer3:   Apr 13 2018, 04:19 AM
era vulgaris   I don't own the car anymore, but on my old 75 ...   Apr 13 2018, 06:38 AM
Vacca Rabite   So please, don't EVER cruise in 5th at 50-55m...   Apr 13 2018, 07:23 AM
Mark Henry   So please, don't EVER cruise in 5th at 50-55...   Apr 14 2018, 07:08 PM
falcor75   Thanks for the replies, hope some more people chim...   Apr 13 2018, 11:50 PM
era vulgaris   Dual carbs, or FI? If dual carbs, then your carbs...   Apr 14 2018, 07:29 AM
MikeM   This is a great reminder... but I've always wo...   Apr 14 2018, 09:10 AM
era vulgaris   This is a great reminder... but I've always w...   Apr 14 2018, 10:32 AM
Boomingbeetle   Warm at idle on my 2430 with stock fan/cooling and...   Apr 14 2018, 10:28 AM
Boomingbeetle   Here it is 10min driving at 3250-3500 rpm in 5th. ...   Apr 14 2018, 10:32 AM
falcor75   I've got itbs and FI. I've measured my ai...   Apr 14 2018, 12:26 PM
era vulgaris   I've got itbs and FI. I've measured my a...   Apr 14 2018, 02:41 PM
falcor75   I've got itbs and FI. I've measured my ...   Apr 15 2018, 01:12 AM
Elliot Cannon   Coming home from Rt. 66 a number of years ago, I w...   Apr 14 2018, 03:46 PM
worn   Coming home from Rt. 66 a number of years ago, I ...   Apr 14 2018, 05:33 PM
Boomingbeetle   Sorry for the sideways pictures, they are not rota...   Apr 14 2018, 04:30 PM
falcor75   Just spend the last 3 hours fiddling with the thot...   Apr 15 2018, 05:28 AM
barefoot   Just spend the last 3 hours fiddling with the tho...   Apr 16 2018, 02:12 PM
jd74914   What is your target AFR? Or do you have a screen s...   Apr 15 2018, 08:22 PM
Dave_Darling   You could see lower flows if you have some valve ...   Apr 15 2018, 09:25 PM
jd74914   Good point. Totally forgot about that.   Apr 16 2018, 05:35 AM
falcor75   Target lambda is around 0,92 (8% more fuel than la...   Apr 16 2018, 09:22 AM
falcor75   I cant get a 0,05 mm feeler gauge in so both butte...   Apr 17 2018, 03:42 AM
falcor75   I spent 20 minutes this afternoon swapping the #1 ...   Apr 18 2018, 01:37 PM
falcor75   Had a 40 minute drive today, starting with slower ...   Apr 20 2018, 08:08 AM
jcd914   After reading through this and your struggles to g...   Apr 20 2018, 11:25 AM
falcor75   No they only have one air bleed screw for each pai...   Apr 20 2018, 12:01 PM
jcd914   Too bad. Their description says there is a vacuum...   Apr 20 2018, 05:29 PM
falcor75   Yes I'm not sure there's any fault with th...   Apr 20 2018, 11:42 PM


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