- Joined
- Jul 21, 2012
- Messages
- 3,240
- Reaction score
- 16
- Location
- South Florida
- My Car
- '71 Mustang Mach 1 M-code "Soylent Green"
'69 Plymouth Valiant 100
'68 Plymouth Satellite
Hello all,
For those of you reading my carb swap post (http://www.7173mustangs.com/thread-carb-swap-options-with-4300a-equipped-m-code-71-351c) will know that I've decided to mount a 600 CFM Holley 4160 to the stock manifold on my '71.
This has brought up a (relatively minor) issue regarding the PCV plumbing. The original Autolite 4300A has a ridiculously huge 1/2" port at the back from which the PCV is connected to, via a matching 1/2" hose that connects directly to the PCV:
On the other hand, the Holley 4160 has a 3/8" connection at the passenger's side for the purpose:
That got me to thinking (when thinking becomes dangerous ) about the factory PVC plumbing on my '79 Lincoln Continental, which has a similar 3/8" port on the back of its Autolite 2150 2-barrel (made by Holley for Ford, IIRC), and a 90-degree PCV valve with a 3/8" connection:
The PCV tube, I might add, slides into the 3/8" port at the back, and is sealed with the short bit of hose you see here.
Needless to say, I dare say it'll probably be easier to use the 3/8" PCV valve in connection with the Holley, but given the pressure on the line, it begs the following question:
Should I go nuts and:
A. Have a 3/8" steel line custom bent for the purpose - or bend and flare it (the tube on the '79 has a push-connect flare to prevent it from sliding too deep into the carb) myself?
or go sane and
B. Use push-lock 3/8" fuel hose?
Near as I can figure it, the push-lock hose should be strong enough, and - unlike the steel line - will not result in metal-to-metal contact between hose and intake manifold.
-Kurt
For those of you reading my carb swap post (http://www.7173mustangs.com/thread-carb-swap-options-with-4300a-equipped-m-code-71-351c) will know that I've decided to mount a 600 CFM Holley 4160 to the stock manifold on my '71.
This has brought up a (relatively minor) issue regarding the PCV plumbing. The original Autolite 4300A has a ridiculously huge 1/2" port at the back from which the PCV is connected to, via a matching 1/2" hose that connects directly to the PCV:
On the other hand, the Holley 4160 has a 3/8" connection at the passenger's side for the purpose:
That got me to thinking (when thinking becomes dangerous ) about the factory PVC plumbing on my '79 Lincoln Continental, which has a similar 3/8" port on the back of its Autolite 2150 2-barrel (made by Holley for Ford, IIRC), and a 90-degree PCV valve with a 3/8" connection:
The PCV tube, I might add, slides into the 3/8" port at the back, and is sealed with the short bit of hose you see here.
Needless to say, I dare say it'll probably be easier to use the 3/8" PCV valve in connection with the Holley, but given the pressure on the line, it begs the following question:
Should I go nuts and:
A. Have a 3/8" steel line custom bent for the purpose - or bend and flare it (the tube on the '79 has a push-connect flare to prevent it from sliding too deep into the carb) myself?
or go sane and
B. Use push-lock 3/8" fuel hose?
Near as I can figure it, the push-lock hose should be strong enough, and - unlike the steel line - will not result in metal-to-metal contact between hose and intake manifold.
-Kurt
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