Head gasket options for high boost OM603

TwoMuchBoost

02-29-2020, 06:09 PM #10

(02-28-2020, 10:28 PM)Vict0r I must admit, I am right behind you waiting to see whats next. I've had my pump in for a week, and I'm babying it. When I get on it the KKK will push 30psi an it scares me. I'm leaning towards the s200sx as a replacement, and a #22 head waiting for the blowout. Do you have plans for an intercooler?

Lol, too funny... there's a S200SX-51 sitting next to my OM606 waiting for a manifold to be build. I also have an intercooler kit I am fitting now but I totally went oversized (31" X 12" x 3" w/ 3" piping) so my front end is getting cut and stretched as we speak. Let's just say... there's NEVER an A/C condenser going back in this car (in the front anyways Wink

). Had to get real mean with a bottle jack and the cutting disc but it's HUGE and totally hidden so I love the stealthness of it. Not sure I want to weld up on the 603 intake to make a plenum entry on the opposite side. I feel like I should just do it once when the 606 gets swapped in there but I also want to see this 603 get a real shot at crazy power just to say I did. I guess it would be at most like 1 intercooler pipe would need to be changed/re-made when I swap motors... we'll see.

With the cold weather currently and carefully picked water/meth injection curve and nozzle size (starts at 16psi ramps in full by 34) I really don't see over 1400* and that's full pedal to the metal, non-intercooled 40psi, set on kill, eating up little rice rockets Big Grin

I usually only let it see 1300-1500 temps for 10-15 seconds which is totally fine looking at the pistons and head... no signs of any thermal issues at all other than the gasket fire rings cracking. Sure I could up the boost or turn down the fuel to try and make the EGT's lower but nothing else in the motor looks stressed heat wise. All the diesel performance guys roll coal for the whole drag pass/tractor pull so I think this gasket is just shit.

Keep the fuel turned down low and you'll be A-ok. The boost itself doesn't really create as much cylinder pressure as actually adding fuel and making the power. What are your EGT's like?

Also, on a side note... my engine gets cleaner and cleaner every time I open it up. Water/meth injection is amazing! Hits like nitrous if your car is starved for fuel and on the flip-side lights the turbo HARD if you're starved for air and smoking badly on the spool-up.

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