coolant reroute sensor/begi kit
I have the bell reroute kit. I ordered the one which exits only through the rear of the head, but I think I got the dual exit one. I already have a plug in the front of the head. I have a 99 motor going into a 1.6 car.
I see no reason why I can't just leave the front plugged up, and take the coolant only from the rear. However, what do I do with the front coolant temp sensor? I'm running MS, so do I even need it? If I get the something tapped for the sensor, I assume it needs to go post-thermostat, like the original design. basically I have this fitting: http://i31.tinypic.com/2823l7m.jpg so I now have no where to put the front CLT sensor on the radiator side, and can't put the rear on the hot side where it belongs. , behind the t-stat. Now, I can use this factory flange, and stick the CLT from the front side of the motor here:https://www.miataturbo.net/forum/att...1&d=1187807095 but now I need a place to screw in the sensor which was originally on the back side of the head, on the hot side of the t-stat. Thanks for the help. |
basically, I now have to do a "spacerless" coolant reroute and the begi piece is worthless.
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So I talked to BRG racer, and Matt Cramer confirmed that since I'm using MS, I don't need the front swtich. However, the pipe is in the way of the rear CLT sensor port (above the nipple), so I still have to drill/tap.
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ok, so one more question. See the blue arrow on the back of the head for the 1.6? Where do I get this signal on the 99 motor?
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Doesn't the '99 head have the same port?
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blue arrow is the temp gauge sender. i believe the 4w head will accomodate it similarly.
what are you doing about a t-stat? if it's going to a track pig, you might not need one. |
Originally Posted by Ben
(Post 272645)
blue arrow is the temp gauge sender. i believe the 4w head will accomodate it similarly.
what are you doing about a t-stat? if it's going to a track pig, you might not need one. Its going to be a car I can daily if need be. If I end up moving like I plan on, I'm going to sell the other cars and just have this green one. |
I'll look at the back of a 99 head today. I thought they had a gauge sender in the same place, but to be honest I've never looked at one that closely before.
Either way, it's a simple task to drill and tap a port for the sender. |
Whereas the 1.6 engine has two separate CLT sensors at the back, one for the ECU and one for the dash gauge, the NBs have a single sensor with a three pin connector that does both. Said sensor, so far as I'm aware, goes into the head itself.
The 1.8 NA has two sensors, but I'm not sure where they are relative to the 1.6. |
IF the resistance vs temperature spec of the 1.6 GAUGE senderr is the same as the GAUGE portion of the 99 sensor/sender that Joe describes, then you can use the 99 sensor. You will then need to tell the MS you are using a 99 temp sensor.
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fuck, more bullshit for me to learn. I'm pretty sure the back side of my head has the 2-prong sensor only, but I'll have to drive to the shop to be sure.
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any tips on getting the freeze plug out of the head? I'm too scared to tap my freshly rebuilt 99-head.
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Originally Posted by Joe Perez
(Post 272929)
Whereas the 1.6 engine has two separate CLT sensors at the back, one for the ECU and one for the dash gauge, the NBs have a single sensor with a three pin connector that does both. Said sensor, so far as I'm aware, goes into the head itself.
The 1.8 NA has two sensors, but I'm not sure where they are relative to the 1.6. |
Originally Posted by Ben
(Post 272863)
I'll look at the back of a 99 head today. I thought they had a gauge sender in the same place, but to be honest I've never looked at one that closely before.
Either way, it's a simple task to drill and tap a port for the sender. |
1 Attachment(s)
Originally Posted by hustler
(Post 273513)
did you have a chance to check it out?
Originally Posted by Joe Perez
(Post 272929)
Whereas the 1.6 engine has two separate CLT sensors at the back, one for the ECU and one for the dash gauge, the NBs have a single sensor with a three pin connector that does both. Said sensor, so far as I'm aware, goes into the head itself.
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Na 1.8
1 Attachment(s)
Just to document these differences for reference.
Top to bottom Sender for temp gauge Sender for oil pressure gauge Sender for coolant temp to PCM |
thanks ben. I didn't expect the sensor to be on the side.
the problem is this sensor is on the wrong side of the thermostat, which is where this problem started. What goes in the 99503 spot? Hopefully its a plug which threads the 1.6 gauge sensor. |
Thank you Ben, I was going to attempt to answer this, but for the life of me could not dare for some reason as i was not 100%. Again, thank you for clarifying this...
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Na 1.6
1 Attachment(s)
This is the info for the NA 1.6. Sorry this older page from the electronic parts catalog has a whole lot of extra stuff on it that I edited out, and while I was in MS Paint you eager bastards had to post and break the thread up.
18-510 is the temp sender to the gauge 18-840C (rear of engine) is the temp sender to the PCM 18-501 is the oil press sender 18-840C (front of engine) is the thermoswitch that activates the cooling fan I left the bottom left Cali-Only caption there so you could see that CA emissions cars have the shorting plug at the pass dash. I don't know what it does. But even though it's not 100% relevant to the topic on hand, I figured it was a distinction worth showing while it was on my screen. |
Originally Posted by hustler
(Post 273538)
thanks ben. I didn't expect the sensor to be on the side.
the problem is this sensor is on the wrong side of the thermostat, which is where this problem started. What goes in the 99503 spot? Hopefully its a plug which threads the 1.6 gauge sensor. |
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