M20 fan clutch (defective from the box?)

[zaq123]

I installed new 2002 manuf date haha Sach I got but yet to run it. I did noticed that all of them, including Mayle I just removed have TB 1577 A-GE marked thermoplate on them. Researched shows that this...

[zaq123]

I'm yet to see 3/4 mark but it looks like 208F (the highest I see) is like half way between the middle mark and 3/4. Im gonna change the clutch to Sach since it's a simple enough to do just to see what...

[zaq123]

So I let her run past 207F. Also I'm using BMW 80° C Thermostat - Mahle Behr 11531713040. Looked at the receipt to remind myself.

My observation reading temps thru Haltech ECU (new OEM NTC...

[zaq123]

system is holding pressure and vacuum, totally vacuum bled with no air when filled (vacuum filled back up with the coolant) and then pressurized thru coolant tank cap (with the heater core valve open)...

[zaq123]

no everything is as it should...

[zaq123]

I need help to figure out what's happening with my overheating issue. New built, coolant was vacuum bled so I don't think air pockets is the issue, I think...
45F outside temperature. When driving,...

[zaq123]

spring pressure is essential factor here too, especially for the first 30 min of cam break-in. With that being said, IE HD rockers that I had were a step better pad finish vs Febi HD. Febi HD pad was...

[zaq123]

I hope it's not an aluminum one. Because you def want that bolt torque plate with it. It's good idea with steel too hence the design.

With my m20 2.9 stroker, I'm using BMW 320i flywheel,...

[zaq123]

20% off right now. I ordered 24 rockers while the price is good. Which is a good price as OEM rockers came with eccentrics and its hardware all ready do go. https://parts.bmwofsouthatlanta.com/?utm_source=google&utm_medium=cpc&adtype=&utm_id=1...

[zaq123]

yeah of course. The problem with using think auto tranny shim there is that your flywheel bolts will be hitting springs on the clutch disk and it will not sit flat against the flywheel....

[zaq123]

2.5mm is manual transmission, 6mm is automatic if i recall correctly. Did you do a manual swap and auto shim is from that ?...

[zaq123]

I would't call it lucky, they are garbage. Go OEM while still available...

[zaq123]

when you gap CKP too much, you loose sync hence your rpms go up, normal behaviour. You have probably some mechanical issue with TB plate/ cable etc or your ECU ids acting up....

[zaq123]

yes, a combination of timing and ICV. Looks like scaling changed for ICV decelleration delay with new firmware for whatever reason. So it kept ICV open longer after decel making it rev hang longer than...

[zaq123]

apparently it was Haltech firmware issue. Needed to change decal delay value as it got rescaled for whatever reason....

[zaq123]

There are some pics in post linked below and some under under Media tab in my user profile.
I learned the cyl head was cracked (was never pressure tested by machine shop before rebuild). So here...

[zaq123]

Ok so I got ITBs idling nicely with the idle valve ICV blocked off. Opened ICV port, car is idling good, blipped the throttle and idle hangs up on high. Closing ICV port with my finger brings idle back...

[zaq123]

was just trying to remember what diff I have....gonna put it here before I forget again as the tag long gone - 3.64 LSD from Z3