Bye Bye Mazda, Hello Bimmer!!!-91' MtechII AW/SW BAR'd S52/SC

[pandaboo911]

Bye Bye Mazda, Hello Bimmer!!!-91' MtechII AW/SW BAR'd S52/SC

That sucks. I recommend you send your head to APM Custom Engines in Morgan hill. Felix did my head for $325. Recut valves with a 3d cutter, valve seals and resurfacing.

Glad I did a resistor delete ^.^

I'm running 15 psi on a stock headgasket without orings and no problems so far. I'm on e85 though.

[KoKoSe7eN]

RE: Let's do the engine!

Removing engine, decided to do a full overhaul.

[KoKoSe7eN]

RE: Let's do the engine!

sad times guys :(
headgasket blew!!
driving in traffic and didn't notice my temp gauge on red!, found aux fan
resistor just went out. had no cooling to my radiator, had the heater on blast and pulled over... but too late the damage was done. burning coolant, now I have a steam engine lol

Car now just sitting here

[pandaboo911]

13psi from a 3.25 pulley! that's pretty damn good.
How much did the TRM tune run you? Did you dyno it or did they just send you a base tune?

My bracket is designed to utilize the stock auxiliary belt so I'll have to stick with the 5.25.

[GnarShark]

never thought about dying carpet :popcorn:

[Coyote_ar]

such a nice build :)

[KoKoSe7eN]

Boost!!!

Any problems with belt slip? I was gonna run a grip coated 2.87 pulley hoping for 12 psi.

Boost gauge!!


About 13psi at redline reliably with my setup, 6" crank and 3.25" pulley.

[KoKoSe7eN]

RE: Let's do the engine!

Just some sensors while I'm in


Make sure T-clamps are used where possible, my old screw clamps couldn't hold past 6psi. After retest, intake can now hold 15psi solid

Old bremi's

New bosch

[KoKoSe7eN]

RE: Let's do the engine!

Boost leak tester, found boost leaks around my whole intake... After 3psi, leaks were pronounced...

Soooo... Need to reseal intake to hold some boost


Main leak was ofcourse the icv/pcv coupler, so sanding away to jb weld it permanently



Make sure it's upside down when curing so the epoxy can evenly seal around the base. Jb weld is very fluid...


O-ring for FPR

[KoKoSe7eN]

RE: Let's do the engine!

Rms 6-rib 6"crank, lucky enough to find one...

Installed! With new AC Belt

New green top 42lb bosch injectors


New porsche 3.5" maf

And the tune

[pandaboo911]

Before I upgraded, I had 5.25" (stock dinan crank) and 3.25" vortech pulley. I was running 7.5psi at 7k with boost leaks, I purchased a boost leak tester and found out I was leaking plenty starting at 3psi... Big problem... I'll post the update with my solution to the leaks...

Any problems with belt slip? I was gonna run a grip coated 2.87 pulley hoping for 12 psi.

[KoKoSe7eN]

Boost!!

Nice!!
What diameter crank pulley / sc pulley are you running? How much boost does it make?

Just trying to get a feel for what size pulley I should use. Also want to see the relationship between boost and impeller speed on an s52.
I'm using the stock 5.25 crank pulley.

Before I upgraded, I had 5.25" (stock dinan crank) and 3.25" vortech pulley. I was running 7.5psi at 7k with boost leaks, I purchased a boost leak tester and found out I was leaking plenty starting at 3psi... Big problem... I'll post the update with my solution to the leaks...

[E30NJ]

Nice work!

[pandaboo911]

Nice!!
What diameter crank pulley / sc pulley are you running? How much boost does it make?

Just trying to get a feel for what size pulley I should use. Also want to see the relationship between boost and impeller speed on an s52.
I'm using the stock 5.25 crank pulley.

[KoKoSe7eN]

RE: Let's do the engine!

Just checking compression
Cyl1

Cyl2

Cyl3

Cyl4

Cyl5

Cyl6

About 3psi from each other