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crazypete 01-24-2003 09:38 PM

I think I'm all set with the lead, in that case, I sniff enough fumes as it is pulling heat off the top of the headers to heat the cabin

Whoa, having the airpump firing into the back of the heads changes the exhaust tone! It sounds like a constant growl. I might be mistaken, but it seems to be quicker on the uptake now...

ChunkFunky 01-27-2003 08:01 AM

They sell lead additive for OLD cars... anything before about 1970 in it's ORIGINAL form would be designed to run leaded gas... you can convert most engines to run on UNLEADED but using hardened valve seats and stuff.. but it you wanna "keep it real" you'd need that additive... now, weather it's actulay LEAD or a synthetic that ACTS like lead, I dunno.. it's basicaly there as a lubricant for engine components...

as for the exhaust grumble and poping... that's normal liek the other posts said... generaly its caused by oxygen getting into the exhaust system and re-igniting your exhaust...it's more previlant if you have bad exhaust leaks... if you are nice and sealed up you'll still get it cause of your air pump I guess.. though I kinda like that sound... but that's just me
-as

mpj76 01-27-2003 08:36 AM

They sell (or use to sell) the 110 octane leaded stuff here at speedway (orlando, FL). They will only let you dispense into a container. A few times I mixed it with 93 octane (about 50/50) and cranked my timing to about 16 degrees. In cold weather it makes a very noticable difference. Never took it to the track this way.

crazypete 01-27-2003 01:56 PM

Well, funny thing is I tried setting the timing to 16 degrees, but the car just wont stay at 16 degrees!

I would set the distributor to 16 degrees with my light, tighten the hold down clamp, recheck and it would be at 16. I would drive it around, come back, check it and it would be back at 10. I set it again, reclamped, drove around and when I looked, it was back at 10!

The car is possessed!

I never knew these mechanical distributors were so stubborn.

I've always run 87 and never had any pinging at all no matter how hard I pushed it.

mpj76 01-27-2003 02:30 PM

Did you remember to remove the SPOUT connector before setting base timing? If you don't, your changes won't hold. I have mine set at 14 degrees. If I put anything lower than 92 in my car, it pings. Removing the SPOUT severs the computer link during timing changes. Most cars running 93 octane can be bumped up to 14 degrees before they start to ping.

Nixon1 01-27-2003 04:40 PM

Think I can get away with 12-13 degrees of timing running 89 octane?

crazypete 01-27-2003 10:44 PM

Before I had this possessed distributor and I actually had a computer, I would run between 14 and 16 degrees using 87 octane and never had any problems. I guess I dont beat on it hard enough to get good detonation going

Nixon1 01-28-2003 05:01 PM

4-6 degrees advanced over stock on crap gas? You must be either deaf or very very lucky!!

Simi Stang 01-28-2003 05:28 PM

timing/gas
 
Quote:

Originally posted by Nixon1
Think I can get away with 12-13 degrees of timing running 89 octane?
If you advance the timing at all...you'd be stupid not to run at least 91 or higher octane.

Nixon1 01-28-2003 07:34 PM

Gotta check my timing..don't know what it's set at but it's hard to start the thing, it misses when I punch the gas, and it's getting 89 octane.

crazypete 01-28-2003 08:59 PM

Like I said, I dont beat on it much.

The most I put the pedal in is 2/3 of the way in and that is if I'm really jettin around. I just casually let it spin up through the gears and this is usually enough to beat the "yo homey g" volkswagen jettas that prowl the streets around umass.

Nixon1 01-28-2003 10:49 PM

It was funny..I had some 45 year old lady try me at a stoplight...my friend was with me and I looked at him as we were accelerating and I notice she was hanging right next to me and said "is she trying me???" and he was like "Yeah dude, her front end keeps getting up higher and higher"...so I'm at about half to 3/4 pedal and I think she's near or at wide open throttle and even with me until the car shifts into 3rd gear and pulls 2 car lengths out of nowhere in like 2 seconds...it was the funniest thing I swear...I just looked at him and said '.....what the hell was that....??'

Mach 1 01-28-2003 11:31 PM

Re: timing/gas
 
Quote:

Originally posted by Simi Stang
If you advance the timing at all...you'd be stupid not to run at least 91 or higher octane.
Not neccesarily. I used to run 14 - 17 degrees base advance with 87 octane and no problems at all.

It can be done. Depends on the particular engine combo and individual engine characteristics.


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