Jump to content
HybridZ

L28 + Vortec 4200 frankenstein


zboi

Recommended Posts

Got this back together again. Lash checked and adjusted this time, lesson learned. Still smokes in boost, so looks like this motor's rings are just not up to the task of holding much boost, odd because it makes good compression across the board. At least the oil leaks are gone. Thinking I should sell this motor and find a lower mileage one, this one would be great NA. 

Edited by zboi
Link to comment
Share on other sites

Looks like the motor is okay after all, 5 of my coils were on their way out and causing some misfires especially in boost. This must have been washing the cylinder and increasing blowby. A set of 6 coils for $60 and things are looking great. Now my VE tables need readjusting, but then dyno.

  • Like 1
Link to comment
Share on other sites

  • 3 months later...

Got everything tuned up a few months back, the car runs great, the power feels like its strongly in the 300s, but I can see that the cylinder head is holding the motor back. Quite sure there is detonation, as my computer keeps thinking there is, and the power is not really increasing at all above about 14psi. I think I will add a flex fuel sensor and try adding some e30 or something. I don't have enough injector to go very high on the ethanol content. Then again, it is quick enough as is.
All in all I'm pretty impressed in how much this motor woke up with this setup, the turbo spools so quick that even off idle it feels like a much bigger motor. 

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...