TheSamba.com :: View topic

Sun Oct 29, 2006 2:31 pm

Yes, that was a lot of work :D

Vulcan wrote: YOU DAH MAN!!!!!!!!!!!

Sun Oct 29, 2006 4:22 pm

Anyone that wants to know more about ignition systems than anyone else on thier block, read this:
http://www.aircooled.net/new-bin/viewproductdetail.php?keyword2=BVB0054

It really helps you understand what exactly is going on with an ignition system. I highly recommend it.

Wed Jun 04, 2008 11:56 pm

Thought I'd ad another option for digital CDI ignition.

My brother bought this summit unit for his V8 chebyhttp://store.summitracing.com/partdetail.asp?autof...toview=sku

His coil crapped out so he ended up using a Bosch blue coil I gave him.

We checked the spark by holding a plug wire about a quarter inch from ground and cranking it. I was amazed. It was the hottest looking spark I had ever seen. The spark was bright blue, about a quarter inch wide and had bright white streaks through it. The car runs great with it. All for about $130.

Another forty bucks adds a rev limiter.http://store.summitracing.com/partdetail.asp?autof...toview=sku

They appear to be based on the mallory highfire units and can be used with mallory, msd, or stock distributor.

Mon Jun 09, 2008 9:44 am

Spankin that Bosch Blue pretty hard with 520 volts don't ya think?

Karl

Mon Jun 09, 2008 1:59 pm

Quote: Spankin that Bosch Blue pretty hard with 520 volts don't ya think?

Also firing twice as often per rpm since it's on a v8. The car's been a daily driver for a few months now and runs great. We'll see how it holds up. He's perfectly happy with the performance and has no plans to change the coil.

I like the fact that he had to use a VW part to get his chevy going and if the coil burns out I've got more than enogh old coils kicking around.

Tue Jul 15, 2008 10:41 pm

the one thing that ive found with an MSD is the low end driveabilty
ive also found that the billet distibutors are alot easier to tune for where u want your advance to come in and how much advance u want

Sat Jul 19, 2008 7:46 pm

what kind of horse gain can you expect from a mallory or msd when upgrading from a 009

Sat Jul 19, 2008 7:50 pm

dressedingreen wrote: what kind of horse gain can you expect from a mallory or msd when upgrading from a 009
You need to see a dyno chart to compare. Total HP will not give the cmplete story.

Mon Jul 28, 2008 9:48 am

Hi, After reading all the input from all of you about distributor in the pass, I made a decision that I was going to run a Mallory Unilite Distributor which I bought for John for air cooled.net so at this point I don't know what kind of additional parts that I would need for my set up. Is it the Hyfire VI CD ign, Hyfire VI-A Ignition w/Built in Rev Limiter, Hyfire 6ez? which one I don't know. My displacement is a 2332cc 48IDA 42x37 Wedge Port FK10 street/strip on pump gas. please Help Thanks

Sun Aug 10, 2008 10:20 am

have you guys got any opinions on the recent major quality loss from mallory?

makes me start to look at other options, trouble is I have all but bought the mallory dizzy already.

Sat Aug 30, 2008 7:47 am

When you rev too fast does the points floats?

Fri Sep 05, 2008 11:33 pm

Quote: When you rev too fast does the points floats?
Points??? The Mallory Unilite and the MSD distributors don't use points. Nothing to float.

Glen, the Unilite vacuum can is adjustable. Do you have any idea what the lowest vacuum setting is for a Unilite? I can't seem to get mine to actually advance with less than 8" hg signal when it's adjusted to the minimum setting. Unfortunately I can't pull that much vac off one of the Dell 40 carbs with an E-120 cam.

I've got a Mallory Hy-Fire3RLi ready to install but would like to get the vac advance working if possible. The 3RLi is pretty basic box with just a 2 step adjustable rev limiter.

Fri Oct 17, 2008 5:57 pm

Anyone know from experience what my plugs should be gapped at when adding an MSD 6A? I have a stock block, dual 34mm baby webs, serpentine belt kit, non-resistor wires and rotor, 009, Bosch Platinum plugs, Pertronix Ignitor, and a Jacobs Electronics Accuvolt FR1500 (voltage stabilizer) set to 16.0VDC. My jets and mixture are set for 6500ft elevation.

Fri Oct 17, 2008 6:04 pm

Sorry..........forgot to mention my coil is a 70:1 MSD Blaster SS.

Thu Oct 30, 2008 4:38 am

satcom80911 wrote: Anyone know from experience what my plugs should be gapped at when adding an MSD 6A?.
Ditch the platinum spark plugs and replace them with non-resistor copper core spark plugs. The platinum spark plugs will only help a weak ignition system. They will limit performance with a higher energy ignition system.

You should be able to use about a 0.052" gap without over-voltaging your distributor cap.

With a Mallory distributor, you could push the spark plug gap to about 0.060" and not over-voltage the distributor cap.

I suspect that your ignition system and ignition coil can provide enough voltage to fire 0.052" spark plug gaps, if you are using the stock 7.3:1 compression ratio.

Also running any CDI with an ignition coil with a substantial amount of primary resistance, such as a Bosch Blue coil, will reduce your voltage output by at least 15%. CDI ignitions are particularly sensitive to primary winding resistive losses.

Scott Novak

Thu Oct 30, 2008 7:19 pm

Thanks, Scott. I've been running around 0.052" for about a week, and the CDI (don't think the brand is overwhelmingly important) has given a noticeable difference in the lower RPM ranges (sub-2500). If we were talking about magnetos, I could answer most anything as I am a magneto mechanic for one of the larger piston aircraft engine repair/overhaul facilities. Thanks again!!!!!

Thu Oct 30, 2008 8:09 pm

Actually there are substantial differences between some brands of CDI. They aren't all created equal.

If you are running a near stock engine you can use a non-resistor projected copper core spark plug at least one hear range colder than stock. the CDI should be able to keep the spark plug clean, and the colder heat range will give you more insurance against pre-ignition and run on.

A copper core spark plug will have more power in the spark than a platinum spark plug with the same gap.

What is the part number of the Bosch spark plugs that you are using?

Scott Novak

Fri Oct 31, 2008 4:32 am

hallo,

i can buy an second hand MSD 6T with external soft toch rev control are they good for street use or are the MSD 6AL better(wich i see more on cars)?

henk!!!

Fri Oct 31, 2008 5:42 am

I have a Mallory Unilite distributor and have been very happy with it. Very easy to adjust the vacuum advance, curve and total advance. I am using it with a Universal brand CDI. I have used this CDI on a number of cars over the past 15 years. I keep waiting for it to die so that I can buy one from Mallory. No rev limiter on the Universal model that I have though. I gap the plugs at .050.

Fri Oct 31, 2008 7:02 am

henk wrote: hallo,

i can buy an second hand MSD 6T with external soft toch rev control are they good for street use or are the MSD 6AL better(wich i see more on cars)?

henk!!!

The 6T is essentially a 6AL with the rev limit control moved to an external box and internal changes to withstand more vibrations. The main reason you don't see it on the street is it's more expensive than the 6AL when you add the external rev limiter.