½” head studs?

Lorena, Texas (South of Waco)

Looks AWESOME, can't wait to see the dyno #'s.....valve adjustment looks to be a challenge...E85 or prem fuel?

Bill

Pelham,Al

E85. We started building the exhaust it finally showed up. Will be running next week. We will have pics and vids for you.

Well we made some progress.  The exhaust showed up and some fittings.  We were able to put it together and start it up!!!  We don't have any dyno runs yet because a couple plugs for the turbos won't be here until next week.  Here are some pics and videos.

The shiny stainless steel looks great.  I am glad we went with mufflers this time it sounds great.

We are using a Turbo Smart E-boost 2 boost controller.  You can see it behind the throttle body.

http://www.youtube.com/watch?v=txLduo0YxsA

Very happy with the new sound!!!

http://www.youtube.com/watch?v=IMBBAZYeFDE

The turbos sound nice and the blow off valve operation is sick.  I think they will spool up very nice.  This was our first start up and it was a nice surprise not to have a single leak!!  (You can also see that badass looking intake, complimants of John Mummert)

Well we were able to make a few dyno runs. When we would get to about 17 psi it would pop sometimes. So we put in a colder spark plug went from BR7EF to a TR8IX. It got better but didn't quit completely. I think i'll call ngk in the morning and see if there is a colder plug. Once we back the boost down to 14 psi or less it works great. If anyone has any thoughts that would be great. I don't know if it would have anything to do with vale springs or what, but it is directly related to boost pressure once we hit 17psi or highter it will do that. I will let you know what I find out. Here is the graph we got so far. Laying down so nice torque!

That's some pretty serious power right there.


Lawrenceville, GA

Couple ideas.. As boost pressure goes up you may need to use a little stronger valve spring.. I have heard of premature valve float with high boost pressures.. Also you are starting to build really high cylinder pressure It could be that your ignition needs more energy to provide a good spark

Well talked to the guys at ngk and they suggested opening the gap. Tried that and got very worse. Closed gap to .020 and this is what happened.



This thing has not run better it is really happy at 607 whp and 750 lb/ft of torque @ 22psi!!!! BOOM!

What a motor. BOOM? you didn't blow it up?

Hope not.

Enjoy
Jim

  Jim Rowe Elkhorn, NE

BOOM, as in we just made 600 whp with a 50+ year old engine for the first time to our knowledge. As far as we know no one has hit those numbers. Stock block, stock main caps and main cap bolts, steel crank, probe pistons, scat rods, badass Mummert intake and some sweet touched up heads by John Mummert!! E85 and 22psi Twin HE351CW from 06 Cummins.