FOOD FOR THOUGHT what about using synthetic oil. Thinner oil has less resistance and may work well on a single relief case. But I would still use a zinc additive. also really seal the case halves and bolts
I agree for a few bucks well worth the piece of mind. Stock is stock. People don't realize if you upgrade top, have to balance it out by upgrading bottom.
The block pictured is for a VW type 3, Squareback or Fastback, but it can be used in a Beetle or Bus.The single port engines actually lasted longer than the later dual port engines and gave less trouble.In regards to the bigger oil pump and case oil galleries VW started using around 1970, the purpose of this was not to increase the oil pressure, but to increase the oil FLOW thru the engine. This is because the emission controls VW had to start putting on their engines made the heads run very hot so they increased the total oil flow thru the engine to help cool the heads. I've never been a big fan of the dual port heads and use single port heads on my own engines and many of my customers over the years.
single port is a stronger design IMO more bullet proof. Adding oil pressure with a 26 mm pump is IMO to get the engine to run at higher RPM pushing oil pressures can also increase flow, more for performance for today's roads and speeds. Also to do that you need a performance cam. I dont believe any of these things can hurt the longevity of the Single relief case engine. I believe the new updated heads from AA with the big valves. and larger vain openings, can still run cool like a single port. plus it solves the design flaws on cracking on them also giving more power capabilities. but yes I still have single port engines mostly as well.
@@Mikefngarage If you want RPM, U need to get a counter weighted crank, balance everything, and upgrade the valve springs. But my 1967 Convertible with it's stock 1500 engine would easily do 80 MPH all day long.The truth of the matter is, most people never have the money to modify a VW for what they want to it to do. I'm very happy with my 76 Westy, it has a 914 block, camshaft, and lifters and the stock FI. on it.The rest of the parts are 2.0 Litre. Transmission is geared for the interstate and the engine can push it right along.
What do you think about enlarging the main oil galley? For casting purposes the choke point of the main galley is where it intersects at the center main as the galley tapers smaller from each end of the case. I figured since I plan to drill/tap/plug the galleys i could easily enlarge the choke point to the same size as the dual relief....but then where is the next choke point 🤔
Nice vid and I absolutely agree with you. One good way is to run a larger filter oil pump with a pressure relief valve such as the 32 mm bugpack. I do run it on my 69 Karmann Ghia 1500 cc engine, which now is a 1679 cc with stock cam and 1.4 ratio rockers, 40 dual Webers...runs just fantastic. Never wanted to open the case because it only ran 40.000 km, but more bolt on power 😏😉😎
Good points. I just bought a single relief case at the swap meet for $100. I will use it as a learning engine, so when I get the real case I want I will know more about engines. I will see what condition the inside of the case is in and go from there. Maybe I'll go with a bigger cam but stick with the stock crank or maybe get a 69mm counter weighted so I don't have to spend money on machining the case for a stroker crank. We'll see what happens, but good advise.
@@Mikefngarage oh nice. Good to know. I actually have a set of dual port cb performance heads I plan to use. They are the 044s. I’ve had them for about 10 years. Running them now with dual 34s
@@SanDiego_VDubLife those heads are great for top end. but not really good for a single relief case engine. they are good for a top end 6000rpm or more engine.
Would it be possible to put a twin port oil cooler and fan housing on a single port case for better cooling on the left head was wondering if it was possible and if it was should i upgrade the oil pump
You can easily Stack Up $400 in machine work on a single relief case for even more and still be very limited it's more of a financial decision then anything else
yea I may do that on this one still debating on if it will cause pressure loss to front main. It might work on this if we do the turbo build with it. Considering a mild turbo engine with some used and some new parts. H rods on stock crank. My buddy did one back in the day and it was really fast. 1776 stock crank and H rods.
I have a 68 1600 case that looks just as filthy as that one . When they put in a 110 cam in they forgot to put the sling plate on the crank back in . It leaked oil like a sive. They must have put on at least 20 thousand miles with it like that........
never seen that before but I usually run solvent through them and blow them out really good before building. Or take it to a machine shop and have it cleaned first
The US Army Fast Attack Vehicle Program, 1984-1986, used single relief AS41 Brazillian Magnesium Blocks for the engines. Could be why they went through so many replacement engines? 17yr old PV2s driving a high performance race tuned car, like they stole it.
Would it be feasable to fit an external oil pressure pipe and back feeding the smaller diameter single relief oil feed bore ? That would help even out the pressure at front and back of this feed bore. its not that simple I know because we are talking something like a ½" external pipe. Any modern engine oil would always be better even on old design engines, but you should never use low viscosity (thin) oil on a high tolerance (worn) engine.
I did not want a mag case Austin would not sell me one because He said not on a bus with out dog house. I should have got a dog house or mesa cooler, with fan .But on last new case it did not loose line bore . My meth head brother put a quart of sand in it and it did not get the bearing it got the lifter bores. To send it to Carcraft and get lifter sleeves it would cost the same as a new case. So I got a new case. Now if I could have walked in they have full case works there!!!!!
The doghouse cooler works well on all VW motors, especially good for a bus. A lot of people don't realize it's easy to put the doghouse assembly on a single relief case, works very well. Runs cool and strong.
Have you studied hydraulic theory? If you has, you would know that pressure is the same at all passages no matter the distance from the pump/ source of pressure.
So here is proof that it can be done with a single relief: cal-look.no/lounge/index.php/topic,15843.0.html ''Built on left over parts: Orginal crank, no counterweights CB h-profile 5,5" Mahle 87mm pistons and barrels Single relief case Fk-89 lube a lobe lifters Cromolly pushrods scat 1,4:1 rockers Deep sump Orginal heads, ported but with original valves 35/32,5mm 1 5/8 header Small air/air intercooler HX35 turbo 56mm and 3" exhaust. 1600cc injectors and E85 Autronic SM4 ECU with MSD 8245 coils He dyno'd 392hp at the last JPM dyno day with one ported head and one original head.''
for sure it can be done. and I was actually considering similar build. Turbo 1776 single relief with that case only because all the machine work was already done. If it needed case savers line bore deep set studs and all the machine work needed (already done years ago.) I dont think I would make the investment on all that machine work for the case. It would cost a lot and better off using aluminum at that point. We have a small turbo sitting there and the case along with a good stock crank. just need jugs and h rods. AA has some cheaper ones. Mild boost and off to have some fun.
FOOD FOR THOUGHT what about using synthetic oil. Thinner oil has less resistance and may work well on a single relief case. But I would still use a zinc additive. also really seal the case halves and bolts
Thinking of building a 1600 from my 1300 case. Thanks for the info Mike.
I agree for a few bucks well worth the piece of mind. Stock is stock. People don't realize if you upgrade top, have to balance it out by upgrading bottom.
Great info... I've got one of these 40 hourses just waiting for rebuild.
Great video! Thank you!!
Yes... 👍😎👍
The block pictured is for a VW type 3, Squareback or Fastback, but it can be used in a Beetle or Bus.The single port engines actually lasted longer than the later dual port engines and gave less trouble.In regards to the bigger oil pump and case oil galleries VW started using around 1970, the purpose of this was not to increase the oil pressure, but to increase the oil FLOW thru the engine. This is because the emission controls VW had to start putting on their engines made the heads run very hot so they increased the total oil flow thru the engine to help cool the heads. I've never been a big fan of the dual port heads and use single port heads on my own engines and many of my customers over the years.
single port is a stronger design IMO more bullet proof. Adding oil pressure with a 26 mm pump is IMO to get the engine to run at higher RPM pushing oil pressures can also increase flow, more for performance for today's roads and speeds. Also to do that you need a performance cam. I dont believe any of these things can hurt the longevity of the Single relief case engine. I believe the new updated heads from AA with the big valves. and larger vain openings, can still run cool like a single port. plus it solves the design flaws on cracking on them also giving more power capabilities. but yes I still have single port engines mostly as well.
@@Mikefngarage If you want RPM, U need to get a counter weighted crank, balance everything, and upgrade the valve springs. But my 1967 Convertible with it's stock 1500 engine would easily do 80 MPH all day long.The truth of the matter is, most people never have the money to modify a VW for what they want to it to do. I'm very happy with my 76 Westy, it has a 914 block, camshaft, and lifters and the stock FI. on it.The rest of the parts are 2.0 Litre. Transmission is geared for the interstate and the engine can push it right along.
Yup... I'll be rebuilding my 40 as a spare.
How can you tell it's from a type 3 or fastback?
What do you think about enlarging the main oil galley? For casting purposes the choke point of the main galley is where it intersects at the center main as the galley tapers smaller from each end of the case. I figured since I plan to drill/tap/plug the galleys i could easily enlarge the choke point to the same size as the dual relief....but then where is the next choke point 🤔
Nice vid and I absolutely agree with you. One good way is to run a larger filter oil pump with a pressure relief valve such as the 32 mm bugpack. I do run it on my 69 Karmann Ghia 1500 cc engine, which now is a 1679 cc with stock cam and 1.4 ratio rockers, 40 dual Webers...runs just fantastic. Never wanted to open the case because it only ran 40.000 km, but more bolt on power 😏😉😎
Good points. I just bought a single relief case at the swap meet for $100. I will use it as a learning engine, so when I get the real case I want I will know more about engines. I will see what condition the inside of the case is in and go from there. Maybe I'll go with a bigger cam but stick with the stock crank or maybe get a 69mm counter weighted so I don't have to spend money on machining the case for a stroker crank. We'll see what happens, but good advise.
74 with clearanced rods drop right in. aa rods and 74. just dont put any rpms to it. great motor with single port heads in a bus....
@@Mikefngarage oh nice. Good to know. I actually have a set of dual port cb performance heads I plan to use. They are the 044s. I’ve had them for about 10 years. Running them now with dual 34s
@@SanDiego_VDubLife those heads are great for top end. but not really good for a single relief case engine. they are good for a top end 6000rpm or more engine.
@@Mikefngarage ok. Good to know. I will keep them for my dual relief aluminum case from CB once I save up all my pennies.😆
Would it be possible to put a twin port oil cooler and fan housing on a single port case for better cooling on the left head was wondering if it was possible and if it was should i upgrade the oil pump
Thanks for the info, will the 1600 single relief be good for stock use with a 100 cam on a bus
To machine a case for larger displacement the right was is 250 bucks
You can easily Stack Up $400 in machine work on a single relief case for even more and still be very limited it's more of a financial decision then anything else
Mike since you’re on the vw case exploration can you weigh in on the Hoover mods ?
yea I may do that on this one still debating on if it will cause pressure loss to front main. It might work on this if we do the turbo build with it. Considering a mild turbo engine with some used and some new parts. H rods on stock crank. My buddy did one back in the day and it was really fast. 1776 stock crank and H rods.
Mike Fn Garage ua-cam.com/video/ubwhsLNM1wU/v-deo.html
Well worth it with a bigger engine that your racing around.
I have a 68 1600 case that looks just as filthy as that one . When they put in a 110 cam in they forgot to put the sling plate on the crank back in . It leaked oil like a sive. They must have put on at least 20 thousand miles with it like that........
yea no sing plate would make a pretty good size mess.
That's crazy... I bet it leaked... lol🤣🤣🤣
How about an 1800. No machine work, but add the 74 crank and c25?
Fun fact: In Brazil we never had some of those improvements. All Brazilian cases are single relief
The only thing that replaces C.I. is CUBIC DOLLARS.
What does single relief case you just need to keep yourself I'm spending too much money stay small
True...👍
question?? does that small passage clog up?? and if it does how do you go about to clean them passages..
never seen that before but I usually run solvent through them and blow them out really good before building. Or take it to a machine shop and have it cleaned first
Yes, never seen it clog either
The US Army Fast Attack Vehicle Program, 1984-1986, used single relief AS41 Brazillian Magnesium Blocks for the engines. Could be why they went through so many replacement engines? 17yr old PV2s driving a high performance race tuned car, like they stole it.
Would it be feasable to fit an external oil pressure pipe and back feeding the smaller diameter single relief oil feed bore ?
That would help even out the pressure at front and back of this feed bore.
its not that simple I know because we are talking something like a ½" external pipe.
Any modern engine oil would always be better even on old design engines, but you should never use low viscosity (thin) oil on a high tolerance (worn) engine.
I did not want a mag case Austin would not sell me one because He said not on a bus with out dog house. I should have got a dog house or mesa cooler, with fan .But on last new case it did not loose line bore . My meth head brother put a quart of sand in it and it did not get the bearing it got the lifter bores. To send it to Carcraft and get lifter sleeves it would cost the same as a new case. So I got a new case. Now if I could have walked in they have full case works there!!!!!
yea for sure.
The doghouse cooler works well on all VW motors, especially good for a bus. A lot of people don't realize it's easy to put the doghouse assembly on a single relief case, works very well. Runs cool and strong.
👍😎👍
Have you studied hydraulic theory? If you has, you would know that pressure is the same at all passages no matter the distance from the pump/ source of pressure.
Aluminum cases are far from bullet proof, when my buddy's engine failed the case became scrap metal.
So here is proof that it can be done with a single relief:
cal-look.no/lounge/index.php/topic,15843.0.html
''Built on left over parts:
Orginal crank, no counterweights
CB h-profile 5,5"
Mahle 87mm pistons and barrels
Single relief case
Fk-89
lube a lobe lifters
Cromolly pushrods
scat 1,4:1 rockers
Deep sump
Orginal heads, ported but with original valves 35/32,5mm
1 5/8 header
Small air/air intercooler
HX35 turbo 56mm and 3" exhaust.
1600cc injectors and E85
Autronic SM4 ECU with MSD 8245 coils
He dyno'd 392hp at the last JPM dyno day with one ported head and one original head.''
for sure it can be done. and I was actually considering similar build. Turbo 1776 single relief with that case only because all the machine work was already done. If it needed case savers line bore deep set studs and all the machine work needed (already done years ago.) I dont think I would make the investment on all that machine work for the case. It would cost a lot and better off using aluminum at that point. We have a small turbo sitting there and the case along with a good stock crank. just need jugs and h rods. AA has some cheaper ones. Mild boost and off to have some fun.
Kinda ugly looking case to me....
needs a proper wash and it will get one when I am ready to use it.