i totally regret doing this mini-me. caused me nothing but headaches for the past 2 weeks!! im soooo pissed off at it, im about to rip it off there and throw it up against the wall.

it barely wants to start and when it does it doesnt run very good at all. very very rough. i have tried EVERY possible combination with it. trust me ive been working on it every day for the past week trying to get it running right. here is what it is: b7 block, y8 head, b7 dizzy, aem y8 cam gear.

i have tried moving the cam gear tooth by tooth, advanced and retarded the cam timing, adjusted the ignition timing, i even drilled out the feet on the b7 dizzy to get mroe adjustability.

when i put everything where it needs to be it runs like ****. the crank is at TDC, the cam gear is at TDC on the compression stroke andadvanced/retarded 5 degrees, and the ignition timing is on. do i have to use a y8 dizzy maybe?? i dont see why i would have to...

please please please please help me, there has to be someone out there that has put a y8 head on b7 block with a b7 dizzy.....at least i hope so. how did you get it running right???




Modified by mike93eh at 6:54 AM 8/7/2005

 

come on guys, ive been sitting here in my garage staring at my car all depressed trying to figure out whats wrong with it. im about to cry here.. because i am always able to find problems.

 

i thought when u did a mini me you had to use the dizzy from the head you had, but im not the one to ask, bizzump

 

B7 dizzy is the right one to use as far as I know...

I DO know that with the Y8 TDC is 12 degrees...so i'm not sure if that has anything to do with it. Are you using the B7 intake manifold/injectors?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BauleyCivic &raquo;</TD></TR><TR><TD CLASS="quote">B7 dizzy is the right one to use as far as I know...

I DO know that with the Y8 TDC is 12 degrees...so i'm not sure if that has anything to do with it. Are you using the B7 intake manifold/injectors?</TD></TR></TABLE>

yup using the b7 intake and everything, p28 ecu, z6 tranny, greddy turbo.

 

its like its running on 2 cylinders. with the car running (if you wanna call it that) if i pull #1 or #4 spark plug wire, nothing changes or happens. if i pull #2 or #3 the engine dies.

spark and fuel is going to all cylinders...

?????????????????????????????????????????????????? ?????????????????

 

did a compression check...

#1 - 150
#2 - 190
#2 - 190
#4 - 0

WTF?!!!!!!!!!!!

 

i put the #4 piston at tdc and all 4 valves are closed and blew in the spark plug tube and air came out of the #3 spark plug tube???

this head was mint when i got it and in running order and so was my block...

 

wow thats messed up, not sure why that happened??? your set up is good though, I have d15b7 block w/ y8 head & intake manifold and used the d15b7 dizzy w/ no problem. keep us posted on your #4 cyl problem. I have never seen that happen before

 

Wow, you rarely ever see 0 compression Bent valve? Non-existing head gasket in that area? Cracked sleeve?.... just shooting ideas Let us know if you do anything.

 

well i had no other choice but to take the head back off. well it loks like one of the exhaust valves on #4 isnt seating all the way. there is a really small gap. is this whats causing all my problems? that explains that cylinder but it doesnt explain why #1 isnt working.

****, im pissed. looks like im gonna have to come up with all new valves, springs, retainers, seals.
or i might just trade this head for a z6 my friend has...