dennisbernal91z

iTrader: (2)

I am about to fire up my motor for the first time this weekend. I know how to set the motor to TDC, so that is good. My question is, how do I know what my motor wants for base timing?

Also how do I choose what springs tp put in the dizzy? I am running a pro billet MSD dizzy.

I had the motor togeather with no Procharger and a huge cam before, NA. I think I am running the black bushing, but I have to look up what that even means again. I just wanted to throw this question out there to see if people anyone has a similar motor and know what to do.

Thanks.

Orr89RocZ

iTrader: (20)

This is a blow through setup right? I'd set base to no different than what you had before. Whatever gives best idle and idle vacuum would be nice.

Is it vacuum advance or mechanical advance? Likely want to set base in the 16-20 range i'm guessing and have full advance in by 3000-3200 rpm at 34-36 deg but have a timing retard function on boost ~ 1 deg per 1 psi. If you dont do that, you will have to limit total advance to a set value that your motor is happy at. Normally n/a will run 34-36 deg. If running 10 psi boost, I'd set advance to 22-24 deg as a starter. It may handle 24-26 deg total with good air fuel ratio.

Other easy way to do it, is if you expect no more than xx boost, say 10 psi pulley, lock the distributor at 24 deg. This will hurt cruise/part throttle stuff tho since thats low for cruise.

dennisbernal91z

iTrader: (2)

Let me start off by saying thanks for the advice. When I see that you (Orr89RocZ) posted to my thread I know it will be helpfull. Back to business...

-It is a blow thru setup and it is a mech advance pro billet MSD dizzy. I think I had the motor set to 17° initial and 34° total. That was 2 years ago so I have no idea now. I will shoot for this right out of the gate since the blower will not be hooked up anyways.

Hope I can get a good idle so that I can tune the blow thru areosol Billet carb I have on there.

Thanks again. I will post how it went.

Orr89RocZ

iTrader: (20)

That will be a good start for now, then check how it runs. Whenever the blower is on, you will need to reduce timing with the boost. Either boost control function on the ignition box or just back out timing on the distributor. Since its mechanical, it may just be easier to just lock timing at one value depending on the boost you run.

dennisbernal91z

iTrader: (2)

True. I do have a BTM box that lets me back timing out up to 3 degrees for PSI of boost so that should help. I will fine tune it on the dyno with different bushing and springs, doing a few pulls each to see what is best. That way I can see what makes more power. I also have a wideband and electronic fuel pressure gauge. I think I am ready to fire this thing up next weekend! Can't wait to hear the motor with the new pipes and all.

I just need to find someone who can weld aluminum so that I can get the bypass valve plumbed up. Wish I could do it myself. I just have a flux core MIG... can't do aluminum. (as far as I know)

Orr89RocZ

iTrader: (20)

yeah aluminum can be tough. I want to go aluminum pipes and thankfully have a good budy that can weld. I just need to beable to tack weld things together so he can finish. My flux core welder needs a gas tank and reconfigured to do that tho.

dennisbernal91z

iTrader: (2)

OK, found a guy to weld the pipe. All set now. I will be firing the engine tomorrow. Wish me luck. I will post pics of the car done tomorrow.

FSTFBDY

iTrader: (33)

Cant wait to see some pic's. Ive followed your builds for awhile. Should be one fun ride.

dennisbernal91z

iTrader: (2)

Bad news. I had it all togeather and tried firing it up. Blower belt started to slip off the crank just trying to get it to line up cyclinder number 1. Then spent 2 hours trying to figure out why the starter wouldn't crank. Fixed that, clutch button terminal wire slipped off. Then tryed firing it up and NO SPARK!, Ugh...

Will try to trouble shoot the boxes this weekend. If not, I am sendingboth boxes and my coil into MSD to get checked out. Probably another month of "stuipd stuff" before I get this thing on the road.

dennisbernal91z

iTrader: (2)

OK, I got the motor fired up. That is the good part, but the bad part is, it is really hard for me to get the timing lined up. I am doing this by myself and it is very hard to see the timing numbers on the damper. I may just suck at doing this, but I think I am seeing 40 50 or 60, and when I try to turn the dizzy to get it down to about 20 I start seeing 310 or something like that! It then starts to back fire like crazy and I shut it off. Really not sure what to do. I will be back working on it this weekend. Anyone have any tips?