So I have really been thinking alot about my Model A 4 Banger. I realize it's extreme limitations, but am willing to push them. I'm keeping this a limited budget but i almost have everything to make it possible. How do think a stock motor will take about 5psi of boost with a draw through carb setup? I can create this fairly easy, I have a suitable turbo. I will make a simple exhaust manifold and use the internal waste gate. The carb will be mounted to another simple L-shaped manifold bolted to the compressor housing, and the turbo outlet will attach to a plenum and 2 intake runners to the ports. Any detonation issuse will be covered by a water/meth injection setup on a pressure switch, so no intercooler will be needed. Questions For the carb, I already have a Rochester 2GV (I know it's too new, it's from my 64 283), from what i have read they are pretty easy to tune and work with, I like that. But at 278cfm, do you think that would be too much? As for a distributor, is the mallory one the only option? Has anybody every convertered a common more modern distributor to work? The turbo needs an oil supply, is there anything I can tap into? I'm not expectioning anything amazing from this setup but #1 I think it will be cool. # 2 it's cheaper for me to go this route then to track down vintage speed parts. Don't worry tho, i'll cover the turbo up with a louvered heatshield or something so you cant see it. Any technical input would be great! thanks!
Might get more bites on the monthly banger meet: http://www.jalopyjournal.com/forum/showthread.php?t=305994
Beings it is a 3 main babbit engine with a splash system for oil, I'd say it would run great for a few seconds before the big bang.
As long as it ran! I was thinking about bearing inserts, anybody had sucess making them out of oilite?
My friend put a turbo off a volvo on a stock Model T. It worked pretty good, but the engine did not last long at all. Also about the oil feed for the turbo, there is really no oil pressure in the engine, you could convert it to a pressurized oiling system, or come up with another type of pump or something
If needed I was thinking about using an elecric oil pump, with a remote filter, and drill the block with 4 oil squirters to cool the pistons and for even more oil running down the connecting rods. A common pump used is the SurFlow Pony Pump.
Well, I for one would love to see you do it. They are a stout engine, get a V8 flywheel and a counterbalanced crank so you cen get some RPM's and let her fly!!!
I don't see any real issues, if you have good rod and main brgs. The small amount of boost you are talking about will run fine for a while. You can put inserts in the rods and still let them dip and that will help out a bunch. As far as oil for the turbo be sure and use a good filter, as there are no filters on stock Bangers. Other than that, oil to the cylinders sounds like a good one. Go after it sounds like a cool one.--TV PS Oilite is an oil impregnated bronz, I don't think it will work well for the high RPM of the Banger, You can send your rods out to have them inserted and still dip oil. Thats what I think you should do.
what if you used up a power steering pump and ran it through the turbo? its a fluid pump, use something light like 5w-20 for it. knowthe old ford power steering pumps had their own little cooler for it--would belp keep the turbo at lower temps using the oil as a coolant and lubricant. the industrial waste oil heaters have bracket filters that could be adapted easily. rochester 2gc is alright and should be pretty good cfm wise given the application. I dont care much for the carb though, always had them leak fuel and air around tyhe throttle shaft. sb mopars in a lot of trucks had much nicer 2bbl holley carbs you can find easily. could always splurge and throw together a stromberg and keep the vintage folks happy.
I've seen turbos on model A engines before. It can be done. Here is an option to the Malory or stock distributor: http://www.fsignitions.com/ They make pointless conversions for the stock distributors too, but use the B unit because it has centrifical advance. I like the whole idea. Insert bearing rods would be the way to go. There are some realy bitchin after market rods that are allready set up for inserts that are only a little more then the cost of converted stock rods. Oilite is to brittle for the pounding they would get if used as a big end bearing. I'd advise against using oilite. As far as the oil system goes, You could get a govener bracket that bolts to the timing gear inspection cover and modify it to drive a SBC oil pump. Use that pump to oil the turbo and to supply the under piston sprayers. run that system through a filter and build a sump on the side of the stock pan to increase the oil capacity. It wouldn't be too hard to set that up to run preasure to the main bearings to and there would still be enough volume to suply oil to the liffter galley too. This one is probably not stock
Most turboed bangers are using a full-pressure oiling system. You might get by with a converted V8 oil pump for more volume, taking the pressure off the 1/8" pipe tap on the right side of the block. The carb isn't too big but will need the enrichment circuit changed to read manifold vacuum. With a turbo the carb thinks there is always high vacuum. Keep the revs down as dipper rods will only stand so much RPM without starving for oil.
Turboes don't need a lot of pressure, they do need a certain amount of volume. I would try putting a restricted fitting, say 3/32", and starting the engine and dump the oil coming out of the fitting to see how much volume you get. It may be enough?
If you are serious about pressure oiling the A block, F.A.S.T. did an article on that maybe a year ago. e-mail me at mimb4e4@gmail.com for more info.
i have a pressurized banger . modified V8 pump set at 18# . inserts , using a weber with 7-1 head works well .
5 psi won't hurt anything if the engine is in top shape and you don't over rev it. The thing I would worry about is overheating and cracking of the exhaust valves and seats. A turbo tends to keep hot exhaust in the engine, this should not be a problem if you don't use too much boost and if you have a wide open exhaust after the turbo. In that case it wouldn't be much worse than a stock exhaust for back pressure.
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