OST-028: Redline it baby....

[oldeskewltoy]

Now that the pistons are finalized and being built, its time to return my focus towards the head.

oldeskewltoy Wrote:The Redline DCOE manifold.... Do to spacing... cyl 1 and 4 have a heavy taper and so valve #2 and #7 actually measure 2.35" (59mm).

....looking at the problem from a different perspective....




The red lines represent the air path from the carb mount flange to the valves. The carb spacing is wider than the ports, and leads to the awkward set up you see.........







So I got to thinking..... what if.....






So last night I made this......





besides showing the mismatches between manifold, delete plate and head... it does do what I was thinking.... AND it dramatizes what the problem is...







I'm just not sure.... so I'll be getting a few opinions.........


To answer a few questions up front... 1) nothing has been ported yet so these are not the final pieces... 2) The rubber would still not be the final part The rubber would be the mold to make the final part. Each piece would have an external screw, as well as epoxy for final mounting.....?????

[Bean]

how about making a flow test of the versions with and without TVIS delete? I know it's a lot of work but might be worth it to see a tendancy as well as difference between the outer and inner ports.
Also in this case staggered intake lenghts (trumpets) might be an option.

[oldeskewltoy]

(07-17-2014 09:10 PM)Bean Bandit Wrote:  how about making a flow test of the versions with and without TVIS delete? I know it's a lot of work but might be worth it to see a tendancy as well as difference between the outer and inner ports.
Also in this case staggered intake lenghts (trumpets) might be an option.

I'm not sure if I'm chasing imaginary, or real results.... as I said I'll be asking more from a few people I confer with.




As can be seen below, and as noted in the above post, the entire intake needs to be manipulated/adjusted, and then blended as one



black arrows - show direction of incoming air
solid blue lines - show areas to be ported
dashed blue line represents - the amount the manifold needs to be moved up.


So it is vital to determine the actual location of the manifold... in relation to the T3 delete plate, and then once they are mounted as one, to determine the T3 plate on the head.


So using 2 long bolts I fasten the manifold to the T3 plate set them as carefully as I can ( aligning the bottom port edges to be as flush as possible through all 4 ports) and them tightening the bolts to lock the 2 together.

Then I pick 2 points in the flange, one between cyl 1 and 2, the other between 3 and 4, that I can drill 2 small (3/32") holes... through the manifold and into the T3 plate. Then, using 3/32" x 1" roll(tension) pins I mount the manifold to the T3 plate in one place.




{note far left port in manifold(bottom in photo) has been ported to size, while the other 3 ports await...}

This, the roll pin mounts, will allow me to repeatedly mount and dismount the manifold from the T3 plate and then reaffix them in the same place, time after time.



As is typical with the T3 plate it is the overall size of the gasket... NOT the port...



so when laid over the intake... you can see the bottom edge, and the top edge of the head are in the airstream. The T3 plate is well situated horizontally. So as with the other T3 products I've worked, jack screws are added, and I'll be elongating the T3 mount holes to allow me vertical adjustment with the jack screws.





More to come.....

[Project D]

A better option might be to replace the delete plate by something like that:


and the DCOE manifold by the smallport version:

[oldeskewltoy]

(07-19-2014 12:55 AM)Project D Wrote:  A better option might be to replace the delete plate by something like that:


and the DCOE manifold by the smallport version:

[oldeskewltoy]

oldeskewltoy Wrote:As is typical with the T3 plate it is the overall size of the gasket... NOT the port...

Because of this I have to make a choice....



up it is...


A lot more to come.....

[KoJl6ACA]

Under "choice" you mean question where to grind head up/down/both sides?

[oldeskewltoy]

(07-23-2014 07:58 AM)KoJl6ACA Wrote:  Under "choice" you mean question where to grind head up/down/both sides?

yes..... Any porter will tell you if you must open (change) a port... TRY to do so by decreasing the angle to the valve.


So the port roof will be tapered to match the roof of the T3 delete plate....



view on far left shows stock shape, center view shows what I normally do with a largeport, and finally in the far right view the dotted line shows what I'll be doing in this case.

[oldeskewltoy]

exhaust port 2 in transition

[oldeskewltoy]

from another forum Wrote:Lookit you and these fancy transition pictures!!! lol

what can I say...




#3 intake - bowls and seats roughed out....




a LOT of material was removed from that right side bowl (#5 valve)


More to come....