Analyze these compression numbers. Give me some ideas about motor..
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Analyze these compression numbers. Give me some ideas about motor..
B18C Benson Sleeved Block, Pauter Rods, Cp 9.1 Pistons.
B16A2 Head, Full port, Skunk2 Stage 1 Cams, Fully Built Valvetrain.
Dry Compression:
Cyl 1: 165
Cyl 2: 162
Cyl 3: 170
Cyl 4: 163
2nd Round:
Dry Compression:
Cyl 1: 158
Cyl 2: 165
Cyl 3: 167
Cyl 4: 165
Added a cap full of oil to each cylinder.
Wet Compression:
Cyl 1: 180
Cyl 2: 180
Cyl 3: 185
Cyl 4: 172
I thought maybe my head gasket was blown because the car is overheating when idling and the top and bottom radiator hoses are very swollen within a few minutes.
Replaced the radiator and the cap with no change.
Do you think my thermostat could be stuck closed?
Should I proceed with the leak-down test and see what kind of numbers I pull then?
Side note: I bought this motor from a local guy. He made 690whp with it. I have it on a tune from hondata that was for my b16a2 just N/A until I get my downpipe to put the turbo on. Car doesn't idle (stalls if I don't keep slight pressure on the throttle), and sounds like it's missing pretty bad.
I haven't set the mechanical timing because I can't get it to idle.
Thanks!
B16A2 Head, Full port, Skunk2 Stage 1 Cams, Fully Built Valvetrain.
Dry Compression:
Cyl 1: 165
Cyl 2: 162
Cyl 3: 170
Cyl 4: 163
2nd Round:
Dry Compression:
Cyl 1: 158
Cyl 2: 165
Cyl 3: 167
Cyl 4: 165
Added a cap full of oil to each cylinder.
Wet Compression:
Cyl 1: 180
Cyl 2: 180
Cyl 3: 185
Cyl 4: 172
I thought maybe my head gasket was blown because the car is overheating when idling and the top and bottom radiator hoses are very swollen within a few minutes.
Replaced the radiator and the cap with no change.
Do you think my thermostat could be stuck closed?
Should I proceed with the leak-down test and see what kind of numbers I pull then?
Side note: I bought this motor from a local guy. He made 690whp with it. I have it on a tune from hondata that was for my b16a2 just N/A until I get my downpipe to put the turbo on. Car doesn't idle (stalls if I don't keep slight pressure on the throttle), and sounds like it's missing pretty bad.
I haven't set the mechanical timing because I can't get it to idle.
Thanks!
#2
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Re: Analyze these compression numbers. Give me some ideas about motor..
You asked if you should perform a leakdown, so I'm going to assume you have a leakdown tester handy. That said, warm the engine up and quickly remove the plugs and radiator cap, perform leakdown starting with the center 2 cylinders and keep an eye on the radiator filler neck for constant bubbles which would suggest the headgasket seal has been compromised.
Are your cooling fans operating? Have you felt the lower hose after the cooling fan cycles so ensure the thermostat is open?
Hope this gets you on the right track, GL!
Are your cooling fans operating? Have you felt the lower hose after the cooling fan cycles so ensure the thermostat is open?
Hope this gets you on the right track, GL!
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Re: Analyze these compression numbers. Give me some ideas about motor..
I have a Flex-a-lite fan and it hasn't kicked on since I swapped this motor in. I know it works. I dunno.
Yeah, I have a leak down tester. Going to do that tomorrow morning I think.
Do those compression numbers seem low?
Yeah, I have a leak down tester. Going to do that tomorrow morning I think.
Do those compression numbers seem low?
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Re: Analyze these compression numbers. Give me some ideas about motor..
With the cap off, it just starts getting hot and bubbling out of the radiator.
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Re: Analyze these compression numbers. Give me some ideas about motor..
The compression test was done with the motor cold. I should have probably warmed it up a bit.
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Re: Analyze these compression numbers. Give me some ideas about motor..
one thing.. if the tune isn't set for the right injectors its gonna be all screwed.
your fan isn't kicking on at all? how quick is it getting that hot?
your fan isn't kicking on at all? how quick is it getting that hot?
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Re: Analyze these compression numbers. Give me some ideas about motor..
Gets hot in like 5-8 minutes of just holding it around 2k rpm's. It's like the water isn't circulating, just pressure is building.
I'm so confused.
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#8
Re: Analyze these compression numbers. Give me some ideas about motor..
If the fan isn't kicking on - get that fixed. Probably the fan temp switch.
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Re: Analyze these compression numbers. Give me some ideas about motor..
Before that, I would apply power and ground to the fan to see if the motors ok.
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Re: Analyze these compression numbers. Give me some ideas about motor..
the the thermostat doesnt open the fan wont kick on also so try removing the tstat and see where that takes you. If fans stil dont kick on see if you have power at your fan temp switch and go from there diagnosing bad switch or something else
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Re: Analyze these compression numbers. Give me some ideas about motor..
Fan comes on. Fan doesn't come on otherwise.
I just got the temp up to slightly over half way and it still isn't coming on.
I unplugged the coolant temp switch from the thermostat housing and jumped the wires with a paperclip. I hear the relay in the fuse box click, but the fan doesn't come on.
It should shouldn't it?
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Re: Analyze these compression numbers. Give me some ideas about motor..
Just loaded a base p72 map. Disabled knock sensor.
Still won't idle on it's own.
Overriding the fan temperature to come on at 150F, fan still not coming on.
I hear the relay click, but the fan just refuses to come on.
Still won't idle on it's own.
Overriding the fan temperature to come on at 150F, fan still not coming on.
I hear the relay click, but the fan just refuses to come on.
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Re: Analyze these compression numbers. Give me some ideas about motor..
the fan fuse might be blown or a bad wire, test for power at the fan when you jump the connector and also check fuse
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Re: Analyze these compression numbers. Give me some ideas about motor..
Fuses are good. Relay is good.
Even hooked up my stock fan, still nothing. I'm so lost.
Even hooked up my stock fan, still nothing. I'm so lost.
#18
Re: Analyze these compression numbers. Give me some ideas about motor..
Why dont you run the Fan to a relay switch itself. A "manuel" switch for it. Its not hard, i had one in my CRX because it wouldnt come on otherwise.
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Re: Analyze these compression numbers. Give me some ideas about motor..
you can wire the ecu aux output to run fan control, the ecu will turn on a relay which will then power the fan.
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Re: Analyze these compression numbers. Give me some ideas about motor..
replace thermostat...car will not overheat without fan...i drove without a fan for months and never overheated
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Re: Analyze these compression numbers. Give me some ideas about motor..
Dude.
Multi-meter.
Test at the fan. No 12V, test at the next plug, no 12V, test at the next plug. Continue back until you have 12V.
My guess, bad relay. Only thing we can do is suggest issues, you need to follow up with testing and confirming.
Multi-meter.
Test at the fan. No 12V, test at the next plug, no 12V, test at the next plug. Continue back until you have 12V.
My guess, bad relay. Only thing we can do is suggest issues, you need to follow up with testing and confirming.
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Re: Analyze these compression numbers. Give me some ideas about motor..
PLUS alot of these hondas dont have good airflow to the radiators due to larger FMIC's so airflow isnt always enough depending on the setup
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