I bought a Hemi - Project Lit'lphant
10-15-2019, 12:41 AM
Post: #31
I bought a Hemi - Project Lit'lphant
oldeskewltoy Wrote:A bit of discovery....

[Image: AEU86 AE86 - I bought a Hemi - Project Lit'lphant]



and a bit more discovery

[Image: AEU86 AE86 - I bought a Hemi - Project Lit'lphant]


and a bit more discovery...... I did a bit of casting.......


Exhaust....

[Image: AEU86 AE86 - I bought a Hemi - Project Lit'lphant]



Intake....

[Image: AEU86 AE86 - I bought a Hemi - Project Lit'lphant]



Both....

[Image: AEU86 AE86 - I bought a Hemi - Project Lit'lphant]




more to come..... Hurray!

Dan -

You can |Sad .... OR you can ask for help!!!

OST Porting service - http://hachiroku.net/forums/showthread.php?t=19991
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10-15-2019, 01:47 AM (This post was last modified: 10-15-2019 01:48 AM by Bean.)
Post: #32
I bought a Hemi - Project Lit'lphant
Intake looks really well, exhaust I guess you can improve the angle a bit.

Hope you're doing well and keep up the good work.

AE86 ex-daily
[Image: AEU86 AE86 - I bought a Hemi - Project Lit'lphant]
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10-15-2019, 09:15 AM
Post: #33
I bought a Hemi - Project Lit'lphant
Am I wrong in thinking these are nice looking ports for an oem head? Exhaust short side radius looks like it could use a little work but the intake looks spot on.

FABRICA MI DIEM, PVNC!
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10-17-2019, 12:57 AM
Post: #34
I bought a Hemi - Project Lit'lphant
(10-15-2019 01:47 AM)Bean Wrote:  Intake looks really well, exhaust I guess you can improve the angle a bit.


(10-15-2019 09:15 AM)Ivan141 Wrote:  Am I wrong in thinking these are nice looking ports for an oem head? Exhaust short side radius looks like it could use a little work but the intake looks spot on.




Considering the age of the design, and the casting techniques of the day...... These heads as cast are pretty good! There is some core shift, but for the most part they are very nice as cast.

On the intake side... a small amount of work around the seats and bowls, and making the ports consistent from one to the next

this is OST-059 cylinders 4(on right) and 3

[Image: AEU86 AE86 - I bought a Hemi - Project Lit'lphant]



whooops, almost forgot this.... Wink

[Image: AEU86 AE86 - I bought a Hemi - Project Lit'lphant]


more to come..... Hurray!

Dan -

You can |Sad .... OR you can ask for help!!!

OST Porting service - http://hachiroku.net/forums/showthread.php?t=19991
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10-25-2019, 10:30 PM
Post: #35
I bought a Hemi - Project Lit'lphant
oldeskewltoy Wrote:on the intake side...



I've not yet mentioned the exhaust side...  This has to do with a few possible options open to me.



As you can see, the exhaust side exhaust valve could be larger(original is 34mm).... the seat is even large enough to accommodate a bigger valve. 

[Image: AEU86 AE86 - I bought a Hemi - Project Lit'lphant]



A bigger valve is EASILY available, the Toyota 2/3TC engines use a nearly identical exhaust valve(length, stem, keeper groove) except the diameter is 36mm!

[Image: AEU86 AE86 - I bought a Hemi - Project Lit'lphant]




And if you look back to the castings, the exhaust port appears to be able to support a larger valve.....

[Image: AEU86 AE86 - I bought a Hemi - Project Lit'lphant]



So... that pretty much leads me to where I am right now...  Getting the flowbench prepared to run the hemi heads. 

[Image: AEU86 AE86 - I bought a Hemi - Project Lit'lphant]



The thought is to test the current valve and see if we are above/below a flow ratio of 65% of the intake flow is the exhaust flow.  Above 65%, leave it alone, run a 34mm valve, with a fresh valve job.  Below 65%, and have the valve seat machined to accept the 36mm valve.



To run the head, I need another one off tool....   a "new" valve actuator... a friend will need to weld that nut(plus another) to the metal bar

[Image: AEU86 AE86 - I bought a Hemi - Project Lit'lphant]



more to come........  Hurray!

Dan -

You can |Sad .... OR you can ask for help!!!

OST Porting service - http://hachiroku.net/forums/showthread.php?t=19991
Find all posts by this user


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