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M106 or m30b35 for future turbo motor?
Posted: Oct 13, 2006 4:17 PM
by wjones
I'm asking for opinions. I want to build up a turbo motor for future use. My current motor is 10:1 and that wouldn't be the best to use.
Engine management shouldn't be a part of the equation.
Would you rather use a M106 (just block and head, not the manifold) or a M30B35 block and head?
I guess I eliminated the b34 because I can locate a M106 with the minor extras for the same $.
Posted: Oct 13, 2006 5:39 PM
by Jeremy
If you're using a TCD kit, the M106 will have the wrong size studs (too big). Fixable, but a pain.
I vote for m3035 with a set of Todd's pistons for 8-8.5:1 static CR.
Jeremy
Posted: Oct 13, 2006 11:39 PM
by vance
My vote would be for the m106 block with the b35 head and intake using the appropriate pistons. If the m106 is available it has the piston oil squirters and the block is tap fpr turbo drainback and knock sensors. Just my two cents worth.
Vance
Posted: Oct 17, 2006 12:19 AM
by wjones
I won't consider taking apart the block. It's not worth it. I want a throw away motor which means no custom pistons. The hassle with the studs does make me reconsider a m30b34, after all Todd has had good success with it.
Posted: Oct 17, 2006 1:16 AM
by gol10dr1
vance wrote:My vote would be for the m106 block with the b35 head and intake using the appropriate pistons. If the m106 is available it has the piston oil squirters and the block is tap fpr turbo drainback and knock sensors. Just my two cents worth.
Vance
b35 block is tapped for a knock sensor as well. m106 motor is more "turbo friendly" from the get go but the m30b35 has a higher compression ratio which would limit the boost and tune combo you could use. if you are looking for wild power without cracking open the motor, you should probably go with the m106. if under 400 rwhp is your goal, go with the m30 b35, it is a fucking rock of a motor.
Posted: Oct 17, 2006 7:59 AM
by Shawn D.
gol10dr1 wrote:b35 block is tapped for a knock sensor as well.
Where is that on the engine? I've got an early M30B35 out of an E24 that has a different external block configuration and would like to see if it has the same provision. TIA!
Posted: Oct 17, 2006 8:06 AM
by Boru
Shawn,
Here 'tis on a '92... M8 hole just east of the core plug, exhaust side.
Posted: Oct 17, 2006 8:16 AM
by Shawn D.
Thanks for the pic, John. I'll have to check that out next time I'm in the vicinity of the block.
Posted: Oct 17, 2006 3:16 PM
by vance
Am I correct in thinking that a m30b34 is not tapped for the sensor?
Vance