DIY Turbo Discussion greddy on a 1.8? homebrew kit?
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coolant reroute sensor/begi kit

 
Old 06-16-2008, 09:38 PM
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Default 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:

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:
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.
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Old 06-16-2008, 09:44 PM
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basically, I now have to do a "spacerless" coolant reroute and the begi piece is worthless.
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Old 06-17-2008, 01:01 PM
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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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Old 06-17-2008, 06:14 PM
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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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Old 06-17-2008, 07:20 PM
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Doesn't the '99 head have the same port?
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Old 06-17-2008, 07:30 PM
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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.
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Old 06-18-2008, 12:48 AM
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Originally Posted by Ben View Post
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.
I looked at the back of my 99 motor today, and I only see a port for the green plugged sensor (above the nipple), and that's it. I talked to Stephanie today and they're essentially going to make a spacer for me (maybe change the kit entirely). It will have a port for the ECM sensor and the heater port, but I don't know where to get the lead for the cluster, but I know the 1.6 guys get that port from somewhere.

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.
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Old 06-18-2008, 08:02 AM
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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.
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Originally Posted by concealer404 View Post
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Old 06-18-2008, 10:51 AM
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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.
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Old 06-18-2008, 10:57 AM
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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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Old 06-18-2008, 11:08 AM
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****, 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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Old 06-18-2008, 04:26 PM
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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.

Last edited by hustler; 06-18-2008 at 05:01 PM.
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Old 06-18-2008, 05:05 PM
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Originally Posted by Joe Perez View Post
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.
Its been surprising to see how little documentation exists on swapping the 99 motor over to NA cars.
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Old 06-19-2008, 01:58 PM
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Originally Posted by Ben View Post
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.
did you have a chance to check it out?
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Old 06-19-2008, 02:20 PM
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Originally Posted by hustler View Post
did you have a chance to check it out?
Originally Posted by Joe Perez View Post
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.
Yes, what Admiral Perez says is the truth, with the exception that the NB temp sender threads into the rear water neck, not into the head directly.
Attached Thumbnails coolant reroute sensor/begi kit-m99cylhead_rear.jpg  
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Old 06-19-2008, 02:26 PM
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Default Na 1.8

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
Attached Thumbnails coolant reroute sensor/begi kit-m5_na8_tempsender.jpg  
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Old 06-19-2008, 02:30 PM
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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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Old 06-19-2008, 02:30 PM
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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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Old 06-19-2008, 03:12 PM
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Default Na 1.6

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.
Attached Thumbnails coolant reroute sensor/begi kit-m5_na6_tempsender.jpg  
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Old 06-19-2008, 03:36 PM
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Originally Posted by hustler View Post
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.
The part you refer to is simply a plug. I have no idea if its thread size and pitch match any of the senders.
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Originally Posted by concealer404 View Post
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