Quad CHT Gauge?
- BlissfullyCrusin
- Getting Hooked!
- Location: A human cesspool wedged between MD and VA
- Status: Offline
Quad CHT Gauge?
I apologize if this is the wrong forum for this message, but I'm pretty sure it belongs here.
I've been debating buying a QUAD cht gauge and was wondering if anyone here had any experience with em? I've never understood the reasoning behind having just a single cht gauge. Yes, chances are #3 is more likely to fail due to restricted airflow but who's to say the others wont fail as well?
For those curious, the beast of which I speak can be found here:
http://www.aircraftspruce.com/catalog/i ... quads2.php
Thoughts? Comments?
I've been debating buying a QUAD cht gauge and was wondering if anyone here had any experience with em? I've never understood the reasoning behind having just a single cht gauge. Yes, chances are #3 is more likely to fail due to restricted airflow but who's to say the others wont fail as well?
For those curious, the beast of which I speak can be found here:
http://www.aircraftspruce.com/catalog/i ... quads2.php
Thoughts? Comments?
- Amskeptic
- IAC "Help Desk"
- Status: Offline
Re: Quad CHT Gauge?
A quad is optimal. Go for it. #2 is the problem cylinder with Type 4 engines.BlissfullyCrusin wrote: I've been debating buying a QUAD cht gauge and was wondering if anyone here had any experience with em?
Yes, chances are #3 is more likely to fail due to restricted airflow but who's to say the others wont fail as well?
Colin
BobD - 78 Bus . . . 112,730 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles
- satchmo
- Old School!
- Location: Crosby, MN
- Status: Offline
I had CHT gauges on #1 and #3 for quite a while. #3 ALWAYS ran hotter than #1, so I got rid of the #1 gauge.
But I agree, monitoring all four cylinders is optimal.
Tim
But I agree, monitoring all four cylinders is optimal.
Tim
By three methods we may learn wisdom:
First, by reflection, which is noblest;
second, by immitation, which is easiest;
and third, by experience, which is bitterest. -Confucius
First, by reflection, which is noblest;
second, by immitation, which is easiest;
and third, by experience, which is bitterest. -Confucius
- Sluggo
- Wishin' I was Fishin'
- Location: Portland, Or.
- Contact:
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That exact gauge has been on my list for a while. When I make my custom gauge cluster.
1977 Bus with Sunroof - "Lucky '77"
2000cc Type IV w/Dual Weber 36s,
Aircooled.net SVDA w/Compufire,
Redline Weber Fuel Pump,
Holley Regulator,
Half Ass Brush & Roller Rustoleum Paint Job,
Incomplete Custom Interior,
Dual Batteries,
Crunched Slider Door.
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- covelo
- Old School!
- Location: Fairfax, CA
- Status: Offline
Re: Quad CHT Gauge?
Why is this? When I adjusted my valves after the Death Valley trip I thought I had the engine turned the wrong way at first, because there was hardly any clearance at all on Number 2.Amskeptic wrote:Go for it. #2 is the problem cylinder with Type 4 engines.
‘80 Vanagon Westfalia - 54,400 miles
'91 Toyota Pickup (4WD long bed) - 199,960 miles
1987 Alfa Spider Veloce - 166,400 miles
2017 VW E-Golf - 5,600 miles
'91 Toyota Pickup (4WD long bed) - 199,960 miles
1987 Alfa Spider Veloce - 166,400 miles
2017 VW E-Golf - 5,600 miles
- Amskeptic
- IAC "Help Desk"
- Status: Offline
Re: Quad CHT Gauge?
More evidence still, huh?covelo wrote:Why is this? When I adjusted my valves after the Death Valley trip I thought I had the engine turned the wrong way at first, because there was hardly any clearance at all on Number 2.Amskeptic wrote:Go for it. #2 is the problem cylinder with Type 4 engines.
My guess is this:
The air comes blasting out of the fan housing outlet and pretty much shoots over to the underside of the cylinder cover at #1. Like standing under a waterfall and finding yourself pretty dry, #2 is actually getting robbed of air. As important is the fact that #2 connecting rod journal is at the end of the connecting rod bearing oil path. Connecting rods get their oil from the crankshaft galleries. #2 gets its oil from the gallery feeding the #3 and #4 main bearings. #2 piston is always the first one to seize during a lubrication failure event. I strongly recommend that we all notch our connecting rods to help the cool the undersides of the pistons, particularly with 2.0s (it is harder to control the expansion rate of the pistons/cast-iron cylinders of the larger engines)
Colin
BobD - 78 Bus . . . 112,730 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles
- covelo
- Old School!
- Location: Fairfax, CA
- Status: Offline
Re: Quad CHT Gauge?
Is there anything less drastic that can be done? Should I set my #2 clearances at .007 next time before a long hot trip? Break down and get a CHT gauge?Amskeptic wrote:I strongly recommend that we all notch our rods
‘80 Vanagon Westfalia - 54,400 miles
'91 Toyota Pickup (4WD long bed) - 199,960 miles
1987 Alfa Spider Veloce - 166,400 miles
2017 VW E-Golf - 5,600 miles
'91 Toyota Pickup (4WD long bed) - 199,960 miles
1987 Alfa Spider Veloce - 166,400 miles
2017 VW E-Golf - 5,600 miles
- Amskeptic
- IAC "Help Desk"
- Status: Offline
Re: Quad CHT Gauge?
[quote="covelo
Should I set my #2 clearances at .007 next time before a long hot trip? Break down and get a CHT gauge?[/quote]
Clean, well-tuned < ! keep revs up when working it up the grades, adjust your valves in a timely fashion, and you will do fine. NO LEAK-INDUCED LEAN MIXTURES.
Colin
(consistent .007" is getting in "hammer-the-valvetrain" territory)
Should I set my #2 clearances at .007 next time before a long hot trip? Break down and get a CHT gauge?[/quote]
Clean, well-tuned < ! keep revs up when working it up the grades, adjust your valves in a timely fashion, and you will do fine. NO LEAK-INDUCED LEAN MIXTURES.
Colin
(consistent .007" is getting in "hammer-the-valvetrain" territory)
BobD - 78 Bus . . . 112,730 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles