Nicks Garage tests a 440 with manifolds, Maxie manifolds, and headers

[RJRENTON]

The ones i was referring to were the tri-ys, which did have a double exhaust exit, unlike the normal maxwedge exhausts.
As for the normal maxwedge exhausts, i honstly dont know if the will fit in a post 65 car. The engine is moved back a couple inches on the k-member in 66, and i dont know if there is clearance to a double master. There may be, but it will be closer than in a 62-65, and that may be the source of the boiling fluid rumor.

IF one switched to DOT 5 silicon brake fluid in lieu of DOT 3 or 4, should "fix" a potential master cylinder fluid boiling issue....yes....???? Just a thought...
BOB RENTON

 

[Don Frelier]

If I remember correctly I met a guy with a 68 that had max wedge manifolds on it.
He had fabricated a heat shield towards the front of the master cylinder, pretty sure he said the master got so hot it wouldn't work.

 

[moparedtn]

As I commented on the video itself, something just struck me wrong about the 440 itself - that
engine isn't very "happy", regardless of exhaust configuration.
As he alluded to at the beginning of the video, Nick didn't build it and didn't know anything
about what was in it - but that one needed gone through for sure.

 

[zyzzyx]

Another thing came to mind about our 440 engines, The way the factory didn't machine the
sealing surface for the valve covers. I plan on skimming these surfaces before assembling
my heads so I won't have oil leaking on the headers! I've heard some of our members say
that their surfaces were all over the place, hence the leaks.

 

[toolmanmike]

As I commented on the video itself, something just struck me wrong about the 440 itself - that
engine isn't very "happy", regardless of exhaust configuration.
As he alluded to at the beginning of the video, Nick didn't build it and didn't know anything
about what was in it - but that one needed gone through for sure.

A tick over 400 horse and I bet the owner will be disappointed with that. Nick will probably build it before it leaves the shop. LOL

 

[moparedtn]

A tick over 400 horse and I bet the owner will be disappointed with that. Nick will probably build it before it leaves the shop. LOL

Same thing I was thinking.
The darn thing acted like there was a vacuum leak or the carbs needed sorted or heck,
even the cam was installed retarded or something - but whatever it was, it was surly at idle
and didn't put out the HP one with that sort of cam should.

 

[Don Frelier]

Same thing I was thinking.
The darn thing acted like there was a vacuum leak or the carbs needed sorted or heck,
even the cam was installed retarded or something - but whatever it was, it was surly at idle
and didn't put out the HP one with that sort of cam should.

Readers digest version: "It ran like ****"

 

[moparedtn]

Readers digest version: "It ran like ****"

 

[toolmanmike]

View attachment 1084689

 

[5.7 hemi]

So Bob, how’s the DOT 5 fluid gonna keep the seals in MC from melting?

IF one switched to DOT 5 silicon brake fluid in lieu of DOT 3 or 4, should "fix" a potential master cylinder fluid boiling issue....yes....???? Just a thought...
BOB RENTON

 

[toolmanmike]

So Bob, how’s the DOT 5 fluid gonna keep the seals in MC from melting?

A higher boiling point but not by much.

Boiling point
Dry boiling point Wet boiling point
DOT 4+ 230 °C (446 °F) 155 °C (311 °F)
LHM+ 249 °C (480 °F) 249 °C (480 °F)
DOT 5 260 °C (500 °F) 180 °C (356 °F)
DOT 5.1 260 °C (500 °F) 180 °C (356 °F)

 

[RJRENTON]

So Bob, how’s the DOT 5 fluid gonna keep the seals in MC from melting?

The question was "boiling" of the brake fluid, not deterrioration of the master cylinder piston seals. Do we really know what component is failing? Perhaps you should consider changing these seals from viton, to perhaps polytetrafluorethylene (RTFE) or a fiberglass reinforced silicon.....just a thought.
BOB RENTON

 

[5.7 hemi]

They don’t have those seals in a mc.

 

[383man]

I cant say that i am surprised how well the maxies worked. In the early sixties, several manufacturers made cast iron virtual headers for their maximum performance engines, that worked even better than the maxwedges did, notably ford, for the 427, and pontiac for the sd 421.(pontiac even cast some out of aluminum for their drag cars, the swiss cheese cars). I think, but dont know for sure, because nascar didnt allow headers. Also, why mopar devised a true cast iron tri-y header for maxwedges, just before the hemi came out.
I have only seen pictures, never in real life, and they are incredibly rare. I dont believe five grand would buy a pair.
Edit : Just checked, Ten grand wont buy a pair!

What I read about the Tri-Y exh manifolds is that they were being developed for Nascar. But just as they were going to go into production Nascar made after market headers legal as did drag racing. And of course headers are so much lighter then Max Wedge manifolds all racers run headers. Thats the same reason I went right to headers as they are much lighter and make even more power so it was a no brainer on my street car. But thats why I read only a few sets of Tri-Y exh manifolds were made and they are heavy and very rare. There is pics of a red 64 Dodge Maxie car that has the Tri-Y's on it as I see the pics of it now and then. Ron

 

[PRHeads]

This one appeared to like manifolds even less than that one up at Nicks......

https://board.moparts.org/ubbthread...s-440-stroker-my-a12-upgrade.html#Post2553328

To put up a reference point for about what the motor up at Nicks might be built like:
This is a 446 with KB quench dome pistons, about 9.5cr, 346 heads with stock size valves and a very minor and quick bowl blend. Comp 280H cam, stock valvetrain, 6bbl, and 1-7/8” headers:

 

[Drew Aitchison]

Nick says he still has trouble logging on here, can anyone help him out?

 

[beanhead]

Nick says he still has trouble logging on here, can anyone help him out?

Tell him to try clicking the "'forgot my password/username" button, if he hasn't already. He'll get an email with the user and/or password exactly as the site has it, so he can make sure they match what he's typing on the log-in screen.