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What are normal charge temps for a WAIC at 75 F ambient?
by
Gizmoman
on 01 Dec, 2013 15:00
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I just returned home from my first real test run with the Van. It was only 46 miles but it was a decent grade on the freeway at 65-70.
The engine runs real strong but I can't seem to keep my EGT's below 1300F on a 3-4% grade, 4th gear, 3250 RPM and 3/4 pedal. Timing is .95mm, Giles pump, K14 boosting to 15 psi, head has a mild port job, 2-1/2" exhaust and a huge glass-pack.
The boost is running about 12 and the EGT's just keep climbing.
It sucks because the engine has plenty of power but I have to back off to keep from toasting it. I think my goofy Laminova WAIC is not doing it's job. Post IC charge temps were hitting 220F. BTW, I shot the water tank for the IC with a temp gun - 117 F, so it is stripping out some heat.
Oh, the ambient air temp was around 75 F
What are "normal" charge temps with a decent WAIC?
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#1
by
bbob203
on 01 Dec, 2013 15:02
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turn down the fuel screw?
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#2
by
Gizmoman
on 01 Dec, 2013 15:13
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turn down the fuel screw?
I will if I have to but I'd rather find out if there's something else wrong first. It's not smoking that I can tell so while backing off the screw will certainly lower temps, it will also slow me way down
I think the intercooler is just not big enough. If I had some temperature numbers to work with, it would make things clearer. As is is , I don't know what "normal" temps should be - do you?
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#3
by
theman53
on 01 Dec, 2013 17:15
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No idea for an AWIC setup. But my FMIC air to air I can give you the hillbilly rundown. I cannot hold my hand on the inlet side of the IC's piping, leaving the IC it feels cold to my hand. So I would guess that coming into the IC it is at least 180f and leaving less than 90f. I guess that because of the temps of water that I know and what my hand feels like if I were to dip it into 180f for a short time. And I know body temp is around 98 so something cooler than that. Bottom line is that it sounds like your IC is not working.
I still think the longer runners would be better.
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#4
by
Gizmoman
on 01 Dec, 2013 18:52
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No idea for an AWIC setup. But my FMIC air to air I can give you the hillbilly rundown. I cannot hold my hand on the inlet side of the IC's piping, leaving the IC it feels cold to my hand. So I would guess that coming into the IC it is at least 180f and leaving less than 90f. I guess that because of the temps of water that I know and what my hand feels like if I were to dip it into 180f for a short time. And I know body temp is around 98 so something cooler than that. Bottom line is that it sounds like your IC is not working.
I still think the longer runners would be better.
Thanks, I've done a bit of reading online and believe it should at least be cooler than 220. Most of what I find is for gassers and I'm not sure if there would be a difference. Cool charge-air is good for either one.
I hate to admit it but I think this Laminova chingus has got to go.
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#5
by
libbydiesel
on 01 Dec, 2013 19:32
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When I had intake air sensor on my vanagon with saab900 intercooler in the D-pillar, on a 75 degree day with 20 psi boost, the highest I would see post intercooler was 125°F.
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#6
by
8v-of-fury!
on 01 Dec, 2013 19:35
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If the water reservoir is also getting heated to near temps of the water in the core.. then it is not the core that is too blame. The radiator used for cooling the water is clearly too small to remove all the heat from the system and it is "heat soaking".
Is this a pure water mix or is there glycerin in there?
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#7
by
745 turbogreasel
on 01 Dec, 2013 19:40
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Flow volume is also a thought.
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#8
by
Gizmoman
on 01 Dec, 2013 20:46
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The rad is small (maybe 12 X 12 at best) and not really in the airflow. I mounted it under the van with about 2-1/2" of air space between it and the pan. It does have a good fan on it though. The pump is a good one - made for WAIC applications. There is a bit of pentofrost and water wetter as well in the distilled water.
One big difference I should mention between my home-made IC and online jobs, is the ports. The ones I look at online all have at least 1/2" ports. Mine are 1/8" NPT. Two in and two out. I just didn't think they needed to be so large - but I'm certainly not an expert in thermodynamics.
I think the caps are thick enough to tap to a larger port.
Thanks for the replies.
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#9
by
745 turbogreasel
on 01 Dec, 2013 21:04
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I bet that has a lot to do with it. You might also gain some cooler rad efficiency by adding a front lip to cause suction through the cooler at speed.
I did that on a Mercedes 309 bus where I added a stock Honda rad and fan underneath in parallel to the OE radiator that could not keep up with the 350, and airflow correction did more for us than the E-fan.
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#10
by
Rock3tman
on 02 Dec, 2013 04:40
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How big are the inlet/outlet ports on your coolant radiator and the pump? My AWIC radiator and pump from frozenboost are both 3/4" NPT. I think flow is your issue.
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#11
by
Gizmoman
on 02 Dec, 2013 05:52
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I bet that has a lot to do with it. You might also gain some cooler rad efficiency by adding a front lip to cause suction through the cooler at speed.
I did that on a Mercedes 309 bus where I added a stock Honda rad and fan underneath in parallel to the OE radiator that could not keep up with the 350, and airflow correction did more for us than the E-fan.
Very good idea! - should it lean forward slightly?
How big are the inlet/outlet ports on your coolant radiator and the pump? My AWIC radiator and pump from frozenboost are both 3/4" NPT. I think flow is your issue.
Ports are 1/2" MPT I agree, my IC ports are way too small - don't know what I was thinking
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#12
by
Gizmoman
on 02 Dec, 2013 05:55
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When I had intake air sensor on my vanagon with saab900 intercooler in the D-pillar, on a 75 degree day with 20 psi boost, the highest I would see post intercooler was 125°F.
Wow - I'm a bit off of that! - Thanks libby
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#13
by
Gizmoman
on 02 Dec, 2013 06:12
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No idea for an AWIC setup. But my FMIC air to air I can give you the hillbilly rundown. I cannot hold my hand on the inlet side of the IC's piping, leaving the IC it feels cold to my hand. So I would guess that coming into the IC it is at least 180f and leaving less than 90f. I guess that because of the temps of water that I know and what my hand feels like if I were to dip it into 180f for a short time. And I know body temp is around 98 so something cooler than that. Bottom line is that it sounds like your IC is not working.
I still think the longer runners would be better.
Thanks for the suggestion but I don't have room for longer runners unless I ditch the Laminova IC and install a "off-the-shelf" unit. As it is, the intake is about an inch from the side of the bay.
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#14
by
theman53
on 02 Dec, 2013 06:15
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