Heavily Modified Log

[Anonymous]

Well here I am being a pain in the..asking what you guys think about how I am mutilating this 170 head.Check me out with my mad crazy mspaint skills.

Special thanks to Hot 6t Falcon's post about porting for the base image.

 

[Anonymous]

Soooo...how many carburetors do you plan on running?


-Chris

 

[Asa]

i'd say three, judging by the bit that says "1bbl x 2 Cyl. Intake Manifold"
it's interesting, don't see why it shouldn't work

 

[Anonymous]

Well, that was my first thought but in his section drawing it looked like he was feeding each intake runner seperately. So, I thought the 1bbl x 2 cyl bit was maybe in correct and that he meant 1bbl x 2 bbl.

Okay, I'll shut-up now. :roll:


-Chris

 

[rickwrench]

Hey G-M-66,
Have you welded the flange plate on yet? From your drawing, there are two pretty sharp bends in the fabbed intake tract. Can you go straight into the intake runner (at the same angel) and add the mount that way? Then, instead of a 90* bend and a 45* bend the other way, you'd just have one 45* bend.
If you go the way it's drawn, make sure the transition from the added manifold to the intake port floor is nice and smooth.
My two cents.
Rick(wrench)

 

[Anonymous]

Soooo...how many carburetors do you plan on running?


-Chris

3 1bbl carbs.Haven't decided on which carbs to try first.The rest of the engine is rebuilt stock so I dun think I need then to be overjetted or anthing.

Hey G-M-66,
Have you welded the flange plate on yet? From your drawing, there are two pretty sharp bends in the fabbed intake tract. Can you go straight into the intake runner (at the same angel) and add the mount that way? Then, instead of a 90* bend and a 45* bend the other way, you'd just have one 45* bend.
If you go the way it's drawn, make sure the transition from the added manifold to the intake port floor is nice and smooth.
My two cents.
Rick(wrench)

My dad works with a guy who owns an exhaust shop and has a pipe bender who is willing to bend teht pipes for my intake for me.Yeah the drawing is pretty shabby and it's not exactly to scale or anything.It's just to sow a rough idea of what I'm doing.When I weld the pipes for the intake manifolds I'll use a dremel with the flex extension to get inside and smooth it all out.I'll make sure everything flows nicely.

 

[Anonymous]

see if he'll make a bunch of headers....

we'll all be interested!

8)

 

[Anonymous]

guy says he doesn't do headers .....mumbling some not so nice stuff..... here's another drawing of the fork part of the intake manifold.This is looking down on it without the 90* bend going from the fork up to the carb.Whatta you guys think?

 

[scottiedawg66]

if you make a set of hedders ill invite you to my birthday party!


...... No seriously I am interested in one if u make them.

 

[CoupeBoy]

When something like this is created does he need to worry about cross over tubes (vacuum equallization)? I only ask because I have seen some that have vacuum cross overs and some that dont and frankly im confused

-ron

 

[addo]

You should balance vacuum.

 

[Anonymous]

ok an how should I go about doing that?

 

[Anonymous]

by linking the manifolds together via a common pipe..

 

[Anonymous]

could that be done with say a 1/4" ID or 1/2" ID steel tube? or would it have to be something larger

 

[addo]

¼" is plenty. Use flex line to avoid vibration issues.

 

[Anonymous]

awesome...thanks guys...really I mean it....now when funding permits I'll be all over that intake like stains on a mattress

 

[Anonymous]

kinda off subject but i have a tri intake waiting to be installed with 1100's where would be the best place to take the vac for these

 

[addo]

You mean the Offy style intake? The log equalises the vacuum. you could try your carb vacuum signal from the centre carb if so inclined...

 

[Anonymous]

sorry yes off the carbs