Topic: Got a cracked head and i have some questiones

[Jaybird02]

I have a 1998 Wrangler with the 2.5l, I bought it with a blown motor.  When I rebuilt it i bored it .030" over with speed-pro pistons. And mildly ported the head and intake manifold.  Since then I have put a header, flowmaster 40 series muffler and kn air filter.  Now the head is cracked and i'm lookin to do some more mods.  I was thinking a 4.0 throttle body and some more head porting.  I also have a set of ford 24# injectors i was considering putting in, would that work? Also would it be a good idea to get an adjustable MAP sensor? Or an adjustable fuel pressure regulator? And what spark plugs should i use? If anyone could help me I would really appreciate it.

[Tsd]

Welcome,

There is a great write up on injectors on the FAQ section:

http://4bangerjp.com/forums/index.php/topic,3479.0.html

Cheers.

TSD

[Jaybird02]

Ok, according to that I have the correct injectors.  Do you think i should run a hotter or a colder spark plug, right now im running autolite platinums

[FourbangerYJ]

Upgrade your ignition system and run your plugs a .065.

http://www.quadratec.com/products/17610_61X_PG.htm

 Also a 62mm TB instead of the 4.0TB. Check the vendor forum.