Not necessarily...

Also, have you owned the car since new? If not... Maybe a previous owner used some type of stop leak, and it might have gummed up water passages... Just a thought

 

Im not sure. When I bought the car the original radiator is good and so was the water pump when I changed it. I think I am just going to head up to home depot to get more materials in attempt to make better ducting.

 

Not necessarily - it could be small enough to leak combustion chamber (HOT) gas into a coolant passage under load.

C

 

Quoted For Truth

Bolded for emphasis


I have no love for el magico funnel.

I have a weep bolt at the front of the front water neck, a high point in the cooling system. To me, a "magic funnel" is a crutch.

 

Where can I find information on this proper ducting technique?

 

miataturbo.net

 

https://www.miataturbo.net/build-thr...splicer-43650/

Post 25 and read on. I am trying to build something similar today and tomorow. Its so damn hot here I am going to go and go to walmart and get an ac unit for my garage.

 

Thanks.

Yeah yeah. The problem with the search is the information isn't indexed in a very search friendly manner. You could spend hours reading posts that contain the words radiator + ducting and never find what you're actually looking for. Oh well.

 

I found the best way to search is through google. Theres a feature that lets us search within miataturbo.net and is so much better than the shitty forum search engine. Most forums I have noticed have aweful search engines so I just use google.

Like this

https://www.google.com/search?q=miat...miataturbo.net

 

Well i got my template almost done should have pics up tomorrow for you guys to complain and tell me how i did it wrong.

EDIT Also forgot to mention spill free funnel is on its way

 

Well ducting has got me down to around 220 without ac in 100 degree weather in and out of boost. I really believe that I have air trapped in the system somewhere. Going to wait for funnel to come in and hope it fixes it. I opened the cap when it was hot with a towel and after it depressurized a big *** bubble came out so yeah there is air in there and obviously I suck at burping the system.

 

I usually jack the front end up a bit... The object us to make the funnel the highest point in the system to force the air up

 

When burping with a reroute, the car/engine needs to be level. When burping with the standard setup raise the front of the car quite a bit.

 

No need for a fancy funnel. Just get one that fits snugly enough in the radiator that it won't flop over. Fill the radiator, and a small bit of the funnel, (maybe an inch or two), and let the car idle. As it comes up to temp, air bubbles will escape into the funnel. Make sure you let the car get hot enough for the thermostat to open while you're doing this.

C

 

Aw **** lol. I been jacking up the car with a reroute.

 

with a reroute, when you jack up the car, the front water neck becomes the second high point in the system - or the front of the block if you have no front water neck. Leave the car level, and if you have a way to vent the front water neck (as in the m-tuned reroute with two allen bolts) remove the higher bolt and fill until water comes out of the hole - then, with water coming out of the hole, plug the hole before finishing filling the system.

If you have the M-tuned reroute, you can indeed jack the front of the car up, but you absolutely must use the allen bolt vent method. If you have an alternative reroute, you'll need to figure out how to vent the front of the block if you jack up the front of the car.

 

I imagine that you are completely frustrated with this hole thing by now and still think that your problem is likely some trapped air in the head and don't think that the funnel will remove air trapped at the front of your head, the bleed plug is there for a good reason, in my opinion if you want to get the air out you have 3 options
1) jack the back of your car until the engine is higher on the back than the front and start it letting it warm up and rev it once it is hot and your thermostat is open.
2) put a bleed fitting on the thermostat housing cover and leave it open as you fill the cooling system until there is no air coming out of it.
3) put a bleed hose like i suggested early in this thread and forget about it

 

I'm going to flush the system. I'm wondering at this point if there maybe a clog. I believe I have acomplised getting the air out of the system. I think my reroute hose was too high so I adjusted it so it sits lower. Then I burped with a funnel that lacked magic until no bubbles were found. Several cycles. Still got pretty hot at 215 without ac. I must have a clog.

 

So an update I am doing the 3 day system flush which requires you to drive the car around over the course of the 3 days for 3-6 hours.(Ill shoot for 3). The car was doing good and even under heavy driving stayed around 207 without ac. Then out of no where the car shot up to 220+ and stayed there no matter what type of driving. Anyone think it could be more air or possibly rust moving around in the system backing up. Could something be expanding when heated causing a the clog. The flush has only been in there for a few hours.

 

Symptoms point to poorly pressurized cooling system.