OST-026: "My White Hatch"
03-26-2014, 07:02 PM
Post: #1
OST-026: "My White Hatch"
[Image: AEU86 AE86 - OST-026: "My White..."]


Hmmmm, seems like no one in the PacNW has any smallport heads they want to sell???? Really??? Sad http://hachiroku.net/forums/showthread.php?t=35564

I'd ask my aeu86 brethren... but the freight would make it too costly


ANYWAY....... so this one came out of deep dark storage....

[Image: AEU86 AE86 - OST-026: "My White..."]




In the mean time, I thought I'd carry this post from OST-025 into this thread...

Cliff's notes - OST-025 is a Mazda/Ford 2.2 head from the late 80s, early 90s
http://i79.photobucket.com/albums/j143/o...ef218e.jpg
http://i79.photobucket.com/albums/j143/o...c5ec4d.jpg
http://i79.photobucket.com/albums/j143/o...46637d.jpg

from another forum and thread Wrote:OST, you should do a thread detailing the steps and exact tools/methods you use to port the heads! It'd be an invaluable DIY tool for those of us who are aspiring to port things as well.
same forum... Wrote:As much as I'd love for this to happen, I gotta imagine it's about the same as asking a Magician to reveal his secrets.

Still, for the dyi type there's plenty of tutorials out there to learn from.

I believe I've shared most of the basic tools before... flex shaft Dremel (I'm into my 5th :roll: ) sanding drums... high speed metal cutters, and select grinding stones. I believe I've also shared the procedure, and materials for getting the chambers just right too - I seem to remember Max, from Illegal Garage asking a number of heads ago

It is quite a bit more than the tools, it is the persons ability to properly manipulate the tools for the desired results, look back to OST-017, that began as another persons attempt @ porting... http://i79.photobucket.com/albums/j143/o...orting.jpg

Besides being able to manipulate the tools, I also have a substantial amount of knowledge I've gained from extraordinary sources (cough... Loynings...) that allows me to know the difference between porting, and cylinder head lightening :lol:



A few more pics...

prior to dis-assembly....

[Image: AEU86 AE86 - OST-026: "My White..."]


and after....

[Image: AEU86 AE86 - OST-026: "My White..."]


Still kinda nasty.... but the cam journals show no gouging... Wink


an intake view...

[Image: AEU86 AE86 - OST-026: "My White..."]



and one of the exhaust

[Image: AEU86 AE86 - OST-026: "My White..."]



By the way... Arie....you were in deed correct, this is an uncut head...

[Image: AEU86 AE86 - OST-026: "My White..."]




To see the car build - http://club4ag.com/forums/viewtopic.php?f=7&t=1486




More to come..... :mrgreen:

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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03-27-2014, 12:03 AM
Post: #2
OST-026: "My White Hatch"
good looking Corolla. Looks nice and seems to be in a good state, Ever resprayed ?

Cars:
"99 Lexus IS200
"86 AE86 Kouki Panda Levin GT-Apex (restore project)
"84 AE86 Zenki Blue Levin (project racer)
Motorcycles:
"02 Yamaha R1
"02 Honda Hornet S
"08 BMW R1200GS
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03-29-2014, 01:51 AM
Post: #3
OST-026: "My White Hatch"
robokill Wrote:good looking Corolla. Looks nice and seems to be in a good state, Ever resprayed ?

It isn't actually my car... I put My White Hatch inside of "", hoping you'd get the connection to the actual owners car... my bad Banging head


I got the head back from it being cleaned... even a good cleaning makes it look better...


Chambers....

[Image: AEU86 AE86 - OST-026: "My White..."]


exhaust ports...

[Image: AEU86 AE86 - OST-026: "My White..."]

These look pretty good... there is enough meat on the port roofs to allow me to get a good shape to them.


intake ports...

[Image: AEU86 AE86 - OST-026: "My White..."]


Lets look at those intake short radius's.... (1 on right, 4 on left)

[Image: AEU86 AE86 - OST-026: "My White..."]



Hmmm, and on closer inspection...

cyl 1...
[Image: AEU86 AE86 - OST-026: "My White..."]

cyl 2...
[Image: AEU86 AE86 - OST-026: "My White..."]

cyl 3...
[Image: AEU86 AE86 - OST-026: "My White..."]

cyl 4...
[Image: AEU86 AE86 - OST-026: "My White..."]



I'll be earning my fee on those....... :lol:


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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03-31-2014, 01:16 AM
Post: #4
OST-026: "My White Hatch"
Well... the first task for me is always deburring the head. I do this first for a simple reason... I'll be handling this head quite a bit, and if I remove all the casting flash, and machined edge sharpness, I'll be doing my hands a big favor..... [Image: AEU86 AE86 - OST-026: "My White..."]


Below are a couple of 2 panel, before and after of the deburring process.

[Image: AEU86 AE86 - OST-026: "My White..."]

Above is the last four bucket cylinders, and last 2 cam journals (#4 and #5) on the exhaust side of the engine.


And here are the first 4 bucket cylinders and cam journals #2 and #3 for the intake cam

[Image: AEU86 AE86 - OST-026: "My White..."]


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
03-31-2014, 06:41 PM
Post: #5
OST-026: "My White Hatch"
oldeskewltoy Wrote:Hmmm, and on closer inspection...

cyl 1...
[Image: AEU86 AE86 - OST-026: "My White..."]

cyl 2...
[Image: AEU86 AE86 - OST-026: "My White..."]

cyl 3...
[Image: AEU86 AE86 - OST-026: "My White..."]

cyl 4...
[Image: AEU86 AE86 - OST-026: "My White..."]

So... any opinions as to which one is the worst???

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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03-31-2014, 07:59 PM
Post: #6
OST-026: "My White Hatch"
Hmm. Number 3 looks to be worst from the photos but just becasue of that I'm going to say number 2 Wink
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04-01-2014, 12:51 AM
Post: #7
OST-026: "My White Hatch"
krullibull Wrote:Hmm. Number 3 looks to be worst from the photos but just becasue of that I'm going to say number 2 Wink

Reminds me (your indecision) of an old "Let's Make a Deal" (Monty Hall era).... Big Grin



"Well, contestant, your first instinct was correct, you should have stuck with chamber #3........"

"oh Monty..." Sad


The reason I chose #3 was the factory machining mark came right to the edge of the seat, it had a big nasty under cut in the port floor, and the splitter was poorly machined covering a big part of the seat.

[Image: AEU86 AE86 - OST-026: "My White..."]

Besides the bowl work... can anyone tell me what else I did that isn't inside the bowls?



Once I managed to get the bowls, and short radius worked out, it was time to begin the port work...

[Image: AEU86 AE86 - OST-026: "My White..."]

Look past the short radius, into the port. The left side has been reshaped, note the light line from port face to the guide. The right side I've not yet touched, and you can see the "pocket" in front of the guide that I have yet to "excavate"



[Image: AEU86 AE86 - OST-026: "My White..."]

All the rough work has been finished on the left(#3), you can see the bowl walls are beginning to blend into the port, the bowls, seats and ports on the right(#2) are still untouched.


oldeskewltoy Wrote:I'll be earning my fee on those....... :lol:


nearly 6 hours worth of work on #3's seats, bowls, and port.



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
04-01-2014, 10:51 AM
Post: #8
OST-026: "My White Hatch"
Quote:Besides the bowl work... can anyone tell me what else I did that isn't inside the bowls?

I spot a deburred/smoothed edge to the sparkplug hole.

FABRICA MI DIEM, PVNC!
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04-01-2014, 01:05 PM
Post: #9
OST-026: "My White Hatch"
Amazing work....
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04-02-2014, 03:38 AM
Post: #10
OST-026: "My White Hatch"
from another forum Wrote:Looks great, thanks for the pictures and the nice explanations!

I try... Smile besides, I enjoy doing it


pack Wrote:Amazing work....

You make me blush... [Image: AEU86 AE86 - OST-026: "My White..."]

Ivan141 Wrote:
Quote:Besides the bowl work... can anyone tell me what else I did that isn't inside the bowls?

I spot a deburred/smoothed edge to the sparkplug hole.

correct! You can see it again in chamber 4 below


And here are the short radius's of intake 4, as above... before on top

[Image: AEU86 AE86 - OST-026: "My White..."]



Besides the short radius's, I'm also working the intake ports themselves. intake port 4 in mid "excavation"

[Image: AEU86 AE86 - OST-026: "My White..."]




and after roughing to size... a bit more work left....

[Image: AEU86 AE86 - OST-026: "My White..."]





another OST 2 panel... 2 down... 2 to go

[Image: AEU86 AE86 - OST-026: "My White..."]



One of the problems with the 16V 4AGE design is the ports are horizontal. Being horizontal, the air/fuel charge must make a pretty significant turn to reach the back of the valve. In the diagram below you can see what I'm talking about

[Image: AEU86 AE86 - OST-026: "My White..."]

Both the newer 4AF/7AF port, and the Formula One port are NOT horizontal, this allows for more cylinder filling, and therefore more power potential.

I borrowed the 4AG part of that diagram, enlarged it, and in typical OST fashion I've created a 2 panel that hopefully will show why I work the port roof.... In essence, I've adjusted the port roof a few degrees, this will assist the air/fuel charge to have an easier time making the bend, because adjusting the port roof the way I have is allowing the air/fuel charge to have a shallower angle to get to the valve... only a few degrees... but it all helps!

[Image: AEU86 AE86 - OST-026: "My White..."]


Now, away from diagrams and to real life....

[Image: AEU86 AE86 - OST-026: "My White..."]

[Image: AEU86 AE86 - OST-026: "My White..."]




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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