what is the purpose of the sheet metal on the bottom of the case between, the heat exchanger,and the case. some have it some dont, porsche never had it. but they had old style heaters, where beetles had it. bill
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what is the purpose of the sheet metal on the bottom of the case between, the heat exchanger,and the case. some have it some dont, porsche never had it. but they had old style heaters, where beetles had it. bill
Air control, Directs the cooling air, directs the heated air and other
bits/pieces separated the hot from cool. The plan is to keep the heated
air outside (under and out of the car)of the engine compartment. These areas are separated by the "tin" and a seal between the moving engine and compartment area. Very important or you will basically be recirculating heated air.
bits/pieces separated the hot from cool. The plan is to keep the heated
air outside (under and out of the car)of the engine compartment. These areas are separated by the "tin" and a seal between the moving engine and compartment area. Very important or you will basically be recirculating heated air.
These right?
http://www2.cip1.com/PhotoGallery.asp?ProductCode=ACC%2DC10%2D5444
The few OEM building I built didn't seem to have them - not sure if they were standard on later models or just an add on. They help direct airflow around the lower piston cylinder before forcing it out.
Or do you mean the little square <2" piece on heads between the cylinders - which does same thing but with factory piece - one above is claimed to be an improvement (suspect hype though or VW woulf have done over 40 years of building them).
Or the even lower ones that deflect air and protect the push rod tubes?
http://www2.cip1.com/PhotoGallery.asp?ProductCode=ACC%2DC10%2D5444
The few OEM building I built didn't seem to have them - not sure if they were standard on later models or just an add on. They help direct airflow around the lower piston cylinder before forcing it out.
Or do you mean the little square <2" piece on heads between the cylinders - which does same thing but with factory piece - one above is claimed to be an improvement (suspect hype though or VW woulf have done over 40 years of building them).
Or the even lower ones that deflect air and protect the push rod tubes?
The pieces shown in the link are the so called "cool tins". They are originally for Type 3 engines, not Type 1, as we use.
They have been sold to improve cooling on Type 1. But, there seems to be a lot of agreement on the Samba that the original Type 1 parts are better. Type 3 parts for Type 3 and Type 1 parts for Type 1.
I originally installed these on my (unused) engine. I am going to take them off and put the original Type 1 parts on.
They have been sold to improve cooling on Type 1. But, there seems to be a lot of agreement on the Samba that the original Type 1 parts are better. Type 3 parts for Type 3 and Type 1 parts for Type 1.
I originally installed these on my (unused) engine. I am going to take them off and put the original Type 1 parts on.
Talked to Pat Downs, CB Performance, about them when he was building my 2110. His respected opinion was " FAGEDDABOUTIT" so I did.
no no no, the ones iam talking about are the ones on the very bottom, of the case and very bottom of the exchangers. just flat metal if they are there to protucr push rods only, why have them some do some dont,porsche never had these on 356 but beetles did.bill
. p,
. p,
oh those. I think they are there to direct the heated air out behind the car (I'm sure secondary reason would be push rod protection).
I agree with Bruce.
They direct heated air out the rear, rather than straight down to the ground to then cloud around the bottom of the car (especially when stopped) and heating the engine.
I remember on my '57 Beetle sedan that they both had a flap on the rear that was actuated by the heater control knob. The knob didn't have much effect on them on mine, so to keep a little more heat in the engine (and, hopefully, finding it's way into the cockpit, but that was more hope than fact) I pushed the flap all the way up to close it and then drove a nail on an angle up into the flap and the sheet metal above to hold the damn things shut. Even after that, I STILL needed a frost scraper on the inside of the windshield on cold days/nights.
gn
The Speedstah Guy, now living in the South
(Frost? What the hell is THAT?)
They direct heated air out the rear, rather than straight down to the ground to then cloud around the bottom of the car (especially when stopped) and heating the engine.
I remember on my '57 Beetle sedan that they both had a flap on the rear that was actuated by the heater control knob. The knob didn't have much effect on them on mine, so to keep a little more heat in the engine (and, hopefully, finding it's way into the cockpit, but that was more hope than fact) I pushed the flap all the way up to close it and then drove a nail on an angle up into the flap and the sheet metal above to hold the damn things shut. Even after that, I STILL needed a frost scraper on the inside of the windshield on cold days/nights.
gn
The Speedstah Guy, now living in the South
(Frost? What the hell is THAT?)
You guys are talking about VW and early Porsche heater systems now.
356's and 912's didn't have Heater boxes like VW's of around 1963 or 1964 on.
VW's use alum. heat sink on exhaust pipe enclosed in a tin surround that get's "Fresh Air" from the engine fan blown through it via those tubes that come out of the face of your type 1 fan shroud to the passenger compartment. This heater system is referred to as "Fresh Air" system. Duh!
Early VW's and 356's and 912's use that flapper Gordon was talking about. Instead of getting fresh air via tubes off the fan shroud, this heat system used the heat of the air that was used to cool the engine. This system is a box below the cylinders with an outlet to the passenger compartment on one end and a flapper on the other end. The flapper on this system get's closed when you turn the heater on. This closes the box and forces the air to be pushed to the passenger compartment (along with all the cool smells of whatever was dripping off of your engine)
So those tins on your "Fresh Air" VW system (that are bolted to the heater boxes) are to direct the air from the fan, after it's done it's cooling job, out the rear of the car .
Greg
356's and 912's didn't have Heater boxes like VW's of around 1963 or 1964 on.
VW's use alum. heat sink on exhaust pipe enclosed in a tin surround that get's "Fresh Air" from the engine fan blown through it via those tubes that come out of the face of your type 1 fan shroud to the passenger compartment. This heater system is referred to as "Fresh Air" system. Duh!
Early VW's and 356's and 912's use that flapper Gordon was talking about. Instead of getting fresh air via tubes off the fan shroud, this heat system used the heat of the air that was used to cool the engine. This system is a box below the cylinders with an outlet to the passenger compartment on one end and a flapper on the other end. The flapper on this system get's closed when you turn the heater on. This closes the box and forces the air to be pushed to the passenger compartment (along with all the cool smells of whatever was dripping off of your engine)
So those tins on your "Fresh Air" VW system (that are bolted to the heater boxes) are to direct the air from the fan, after it's done it's cooling job, out the rear of the car .
Greg
Gordon-
You completely done with New England now?
You completely done with New England now?
Nope, still have a house up there that my daughter's living in, and doubt that it'll be ready to sell for two years until the market comes back. We live/vote in the South, and spend more time here each year (now up to 9+ in the South, although the Summer heat/humidity here is wicked). It's nice having a year-round Speedster season, too!
Greg wrote: "This closes the box and forces the air to be pushed to the passenger compartment (along with all the cool smells of whatever was dripping off of your engine)"
THAT's the reason why, when they first went for a ride in my '57, any new, prospective girl friend would immediately say, "What's that funny smell? Like something's burning!" and then get right out....
Greg wrote: "This closes the box and forces the air to be pushed to the passenger compartment (along with all the cool smells of whatever was dripping off of your engine)"
THAT's the reason why, when they first went for a ride in my '57, any new, prospective girl friend would immediately say, "What's that funny smell? Like something's burning!" and then get right out....