Intake manifold possiblity?

[Anonymous]

Can anyone tell me anything about this intake manifold? Does anyone think it is adaptable to a '78 log?

...Let me try that again. :roll:

-Chris

 

[66200i6]

I wonder?

You could cut and seal the center two runners and turn it into a manifold with just the outer runners. Depending on the dimension of the outer to runner flanges it may provide an acceptable adaptor that would split the log into two separate banks. All you would have to do is machine two flat faces at the proper spot on the log and use U-bolts to secure.

What engine is the manifold designed for?

Ric.

 

[Anonymous]

do u actually have that manifold? if u do, just hold it up to the manifold on your engine and see if the 2 outer runners approximately go where the 2nd and 5th combustion chamber are....that would be pretty sweet if it works...

 

[Anonymous]

Nope, I don't have one like it yet. Apparently it's a manifold off an old Chevy. Don't know the year or model but I'll be taking a trip to my local salvage yard this weekend. I'll see it I can't find one there.

A few weeks ago I planned on adapting (2) 2 BBL carb. but many, many family events filled all of my "extra" time.

Well see...if I can't make it this weekend, the neighbor across the street said he'd look for one for me (he needs to get a few parts anyway).


-Chris

 

[Anonymous]

I doubt your going to find one in your wrecking yard.... do you see what I see: "OFFENHAUSER" stamped into the manifold?

 

[Anonymous]

Ya, I saw that but I thought I may be able to find something similiar - size wise. Adapting a manifold to the log, I think would be the easy part, finding the right manifold - that's a different story! :roll:

Hey, what about one from the old 2.3L. It looks very similiar, doesn't it?

-Chris

 

[Anonymous]

a saw a manifold on a bobcat 4 banger, i never thought of it before, but that would probably work too. its not as round or pretty as than and its only a 2bbl...but it would be sweet it it worked...then theres also the problem of it possibly not fitting in the engine compartment.

 

[Anonymous]

Its from a 2ltr pinto
If you get one dont cut it...sell it to me

 

[xctasy]

Spacings of the ports are 4.017 on the Pinto engines, same as the bore spacings. The Alloy head Falcon I6 has 4.08" spacings, same as the bore spacings.

The Falcon Log I6 has the following spacings, measured from the mid point of cylinders 3 and 4. (Called CL)


The spacings are:

1 and 6, 9.44" from the CL

2 and 4, 6.61" form the CL

3 and 5, 2.44" from CL


In a long section, Ford I6 Log

i______i_________i_______CL_______i___________i______i

For a Nissan/Datsun L24, 26 and 28 from the 24, 26 and 28 Ounces

The spacings are:

1 and 6, 8.70"from the CL ( 0.75" out, but you can TIG weld to suit)

2 and 4, 6.69" form the CL ( only 80 thou, not an issue)

3 and 5, 2.72" from CL (a miss by 200 thou, easily filled by devcon)


In a long section, Nissan/Datsun I6 Log

i_____i_________i_______CL_______i___________i_____i


In terms of intake, your best bet is sawing the log off, and placing the Datsun 280 EFI intake on it. The SU ones may just fit too.

You can use the Datsun exhast too, width is the very same as the Ford, and the centre ports are really nicely profile. Only thing is, it places the dual out header tube right over the front.

Great for a turbo!

 

[Anonymous]

Okay X, that's too much work! Back to the drawing board for me. Hey, I just may have the log milled flat and mount one of my extra 2100's.


-Chris

 

[DaGr8Tim]

On the subject of modifying intakes, I wanted you guys to ponder this idea.

Here's what the stock form looked like.

 

[Anonymous]

wow, talk about improved flow and equal distribution.

 

[DaGr8Tim]

wow, talk about improved flow and equal distribution.

Only problem is the lack of an IAC and EGR. I would have left the stub where the stock TB mounted for that reason.

This guy's plan is to have that stick out of the hood, I think. He needs to get the TB with TPS installed for that.

On the other hand. Might make an intresting mod to seal off the front and mount a carb adaptor plate to it. heh

 

[Anonymous]

True, but i'm sure if he is going to go to that much work he'll figure something out.

 

[xctasy]

More information on the Nissan L-series intake and exhast.

I'm almost finished my gearbox adaptor swap for my Falcon.

As an aside as I wait for some of my parts to arrive, I've been doing further work on this.

Remember then need for a good manifold for a chopped log? Well, here it is!!!

Here is a custom L28 Turbo instillation by Tony Middleditch in 1990 in his FJ Holden. It uses the split pulse water cooled TO3 turbo used in Nissan RB30ET engines, and

Here is a dirty, nasty, unprofessional shot of my LD28 diesel intake.

Both the L28, LD28 have the same exhast and intake bolt pattern. Many guys in New Zealand turbo there LD28's, but few really do it well. I'm proposing using the LD28 intake and exhast pattern on a cut-off log head.

The idea is simple. A turbo intake sells for LD28 engines, and allows more space for a big turbo. The shot above shows how long the Diesel intke manifold is campared to the custom intake made for the L28 Turbo.

If I duplicate the LD28/L28 248/260/280 Z bolt spacing, I can sell one kind of intake and exhast for

The Diesel 2800 cc
Any 240, 260, 280 C, D, K or Z

Any 144-250log head.


All thats needed is the right adaptors to fit turbos and the right custom intake.

If you reverse the top photoS, you'll see a turbo will fit a log head Falcon, Comete, Mustang, Monarch if the log is sawn off. There will also be room for injectors, so it will suit a carb turbo, EFI turbo, or EFI non-turbo set-up.



Asa67Stang, your my ginea pig!

 

[66200i6]

Something looks funny. I would have to see the dimensions. I have a layout of the engine bay that shows the amount of room we have to work with in a 66’ Mustang. There is surprisingly little room to work with because of that shock tower. It would be great if you could share a drawing of the required intake manifold face. I have the Z car intake gasket dimensions if you’re interested.

Thanks, Ric.

 

[Anonymous]

X,

You said, "You can use the Datsun exhast too, width is the very same as the Ford, and the centre ports are really nicely profile. Only thing is, it places the dual out header tube right over the front." Does that mean the exhaust manifold will bolt up to a 144-250? Or will it need minor modifications?

Also, those pictures you are showing, is that exhaust manifold the one you are referring too?

Sorry, so many questions but I'm just trying to get it all clear in my head before I take another trip to the salvage yard this weekend.



-Chris

 

[xctasy]

This is the L-seires Nissan/Datsun inlet and exhast arrangement.

Note the L-series gasket on the 200 log exhast. The Nissan ports are uniform, higher mounted, and cleaner. In a 200-250 engine, the exhast ports are a let down. The intake ports on a cut log, even the small ones of the 60's, are plenty big enough.

This is the exhast differences. The upper one is US 200, the lower one is LD28. All Nissans and Datsuns, even thjeTurbo 280ZXT, ran this exhast manifold. It has huge exhast ports, and flows very well. Dual out headers are quieter than tube headers, and are far more suitable for a turbo instilation. Admittedly, the outlets point towards the alternator and engine mount, but it clears them if you use a tight wound tube. The 280ZXT ran an Import Killer style J-tube, and the turbo can sit closer the the engine than with the stock log exhast. It doesn't crack like Ford ones do.

The L-series gasket is almost a Ford duplicate. The outer exhasts are not matched perfectly. The shape and size is much better, and I know I can fit it on a sawn off log head.

This is no bolt on unless there is an intermediate plate to fit it on to. It basically duplicate the Argie ME port arrangement.

The alloy intake manifold is narrower than the log, and should just fit on a brace bared convertable. The intention is to make up a shorty intake that does duty on both the L-Dastsun and Log I6. In a later car, its not an issue.

The LD28 intake has no injection points, no throttle body. There is the option placing a twin or single point throttle body from a 4.9 EFI or 5.0 EFI.

Bascially, thats the details. The rest is my next years project.

 

[Anonymous]

So they only modification I would need to do in order for the exhaust manifold to work would be to the mounting bosses, right?

I'm thinking cheap dual exhaust at this point. I can't afford headers.



-Chris

 

[Anonymous]

I'm thinking cheap dual exhaust at this point. I can't afford headers.

Here's a set on Ebay, they were still in the somewhat affordable range when I posted them ($103), but who knows how high they'll get... but it may be worth a shot...

http://cgi.ebay.com/ebaymotors/ws/eBayI ... RK:MEWA:IT