Is Anybody Running a Carb/ supercharger setup?

[JONYMOPAR]

What about this pull over. is it an issue with the webers as well, my dgas 38 runs a little rich even at idle.

[v8power]

I do not have the factory computor in this car. The factory harness was taken apart and every wire that came from the computor that wasn't needed was taken out. It was a bit of a nightmare but in all it was worth it . The computor is used to control the electronically controlled carb and the advance for the ignition. This can not be used when you eliminate some of the carb electronics and will not retard the ignition for boost. This will not have an effect on a motor making 5-8 lbs. But when you start making over 12 the motor will start to detonate. unless you take alot of initial out.The VW beatle procomp distributor is a mechanical advance I have the initial set at 15 BTDC and the total is 34 BTDC but the MSD Boost master is set to retard the timing 1 degree for every lb of boost with a start point of 10 lbs. This gives me 24 BTDC at 20 lbs.

[TURISMO2.2L]

jonymopar
have you been running your supercharger with the stock computer?? I've got the racing computer that's used for 1983models. that's all i could find for my 84 from mopar. I did notice i have more vac. now. it feels more responsive and dont feel like it's being starved. what all on the vacuum lines have you removed?? i've got pretty much everything still there except the vac line for the air pump that came off a long time ago.
20lbs of boost is way too much for a daily driver. traction control in WA. the best rain seasons around!!! that just wouldnt work for me. glad to see it can be accomplished though.

[v8power]

If you look at the pics There is no computor on this car at all. It has a MSD 6al combined with a MSD Boost Master. and a Volkwagon Beatle Procomp distributor. This settup makes every thing adjustable. And the boost master lets you control your timing with a knob mounted to the dash that comes with the unit. The problem is if you are using your factory carb . It is computor controlled. and it works off of the o2 sencer. so you need the computor for your fuel control. You know I do not Know how anyone can get one of these blowers to work efficiently with the factory computor. It does not have any way of controling timing under boost. And the factory carbs need the computor for fuel delivery to work. Did any one ever see one of these blowers actually make alot more power and boost using the factory carb and computor ?? I would say through my experience with mine it is immpossible.

[JONYMOPAR]

i have to correct my self, i am using the mopar performance computer, weber dgas carb i have most vac lines disabled, egr blocked, vac line from manifold to computer. if i remember the instructions for the kit were extreamly vague about all this. i tried the msd but had issues in the rain got stuck twice, so i took it out, so the 6btm starts working after 10psi i did not know that, that explains why i did not notice any difference with the adjustment, is that in the msd instructions? is the vw distrb a direct repacement.?

[JONYMOPAR]

the old mopar performance catalag reccomended the weber, but not nothing on the proper set up of ignition..

[v8power]

The msd boost master is adjustable on the box itself at what amount of boost you want it to start retarding the timing. Then with the controller on the dash you can adjust how many degrees of timing you can retard per lb. of boost. You can set it for 0-3 degrees of retard for every lb of boost up to 15 degrees. Also there is no egr valve on my intake. The factory exhaust manifiold also had terrible flow. And limited the exhaust size. I found that the 1 7/8 tube header was over kill but you do not need back pressure with a blower. The tubes are 28 inches long with a 3 1/2 collecter 18 inches long. It then reduces to a full 3 inch mandrel bent exhaust.Hung from the factory hangers. The muffler is a 3 1/2 bullit with a 3 1/2 turndown. All carbs used with blowers have to be boost referenced. Normally asperated mounted carbs work off of the loss of vacuum signal when the the carb starts to open. When you have a blower the vacuum increases when you hit the accelerater. My holley is boost referenced and works fine . But I want to fine tune my fuel curve so we are concidering port injecting the car now . Summit sells a low profile air intake for the top of the blower . And a 90 mm. throttle hopper to go with it. Also if you notice there is no pcv on my car . There is no vacuum with a blower cam because of the 114 lobe separation and the long duration. Also when you start to make boost it trys to pressurize the crankcase.Right now I am using a breather can with a small filter. I am going to change this to a asperater evac system. to gain alittle more HP. on the top end. An evac system sucks the crankcase pressure out by use of a valve mounted at a 45 degree angle on the header collecter from here you run a 3/4 hose to your valve cover. This also creates neg. pressure in the crancase and helps to pull the pistons down at high RPM's. which inturn makes more power. We use this system on are race cars. Blowers make alot of crankcase pressure unless you have total seal rings. They are not recomended for tighter street motors though. You would not believe how much oil ends up in that little bottle I have mounted. Crankcase pressure kills HP.

[v8power]

jonymopar, I do not know what a dgas 38 is . But if it is a 38 mm. in size I would say you need to go bigger. One of are single cyl. honda race quad has a 42 mm. carb on it.

[supercharger2.2]

the dgas 38 is a 2 barrel (38mm) each and they both open at the same time...I'm running a dgas 32/36 and it is progressive.... I hope to up grade to the dual 38 next summer :)

[JONYMOPAR]

ok v8, granted most of us running this set up are not as complicated, you have done alot of impressive work, but what would you recommend for us budget minded do it yourselfers, i always felt the carb was too small because the adapter plate blocks off some of the blower inlet, but was hesitant about over carbing the motor, also i am not running a header, back in 1990 when i set this up fwd headers were prone to cracking so i opted not to use it. i was using the msd 6 btm but i think that is fixed as far as when it starts to retard the timing, can you give us more info on that distributor.

[v8power]

The 2.2 motor was designed by the Germans. I read an artical that the VW dist. was a direct bolt in except for the drive cog. The factory VW dist. has one spark plug wire at a different location. This was to advance one cylinder do to a problem with detonation. So that said The VW dist. could only be installed oneway. So not to put that cyl. out of time The drive cog male slot is off center. After purchacing the VW procomp I Took the cog off and installed one off of the 2.2 dist.. The only modification was to cut the top surface of the cog for proper dist. depth. and to drill it to the right shaft size.Once the dist. fit the block. I found it was to wide with the cap on and did not clear the front of the block surface. I put the block in a mill and milled off the surface of the oil return passage and also did the front of the head. This can easily be done with a grinder. I will take pictures of the block and head while it is apart and post them. I have to cut the new head we are installing so I will also show that while it is being cut next week. .150 is what has to come off. I have a real nice low mileage charger forsale if any one is interested. It is Red w/red int. 5spd. all original even the paint. It never even had a door dinger and still shines like new. Interior is mint. 34 K original . nicest Ive seen. Best offer over $1200.00 needs nothing drive it home.I'm the second owner. Need money like everyone else must go . Also have Omnis . Spread the word .

[xtrempickup]

is the charger carbed or turbo

[v8power]

It is carbed . Also have all ground effects and nose from a shelby for the car. No shelby hood. Car came with a factory rear wing. The suspension is also here to convert it to five lug from the shelby.

[TheCanadian007]

Do you happen to have any Turbo Omnis?

[JONYMOPAR]

v8 I am looking for a winter beater, anything with a efi 2.2 or 2.5 sundance prefered, i have one now that needs a motor.

just to put things back into perspective for anyone reading this, the supercharger kit was never ment to produce big horsepower, just to help the little motor breath better and to make the most out of the 135cid, and its looks way cooler than a turbo.mine runs good but it will never beat a well tuned turbo. my car turns more heads at shows than big v8 cars because it's different, and i am very happy with that. that was the original intent of the project, to stand out from the crowd. it is still fun to drive and the power is much better that stock, i should know because i have a stock 87 with carb as well. if anyone wants to push the limits, great go for it, but don't expect rocket like power on a stock motor. now i'll get off my soapbox..