OST-071: For an AE71 - Largeport for a liftback
01-25-2021, 12:49 AM
Post: #1
OST-071: For an AE71 - Largeport for a liftback
I was contacted during mid summer by this client. I had just begun OST-070, and he wanted OST-071 for his AE71.

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]


As you can see, it currently has a clean 4AC engine in it......

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]


But he wants a bit more.........

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]



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
01-25-2021, 10:18 PM
Post: #2
OST-071: For an AE71 - Largeport for a liftback
The owner of the AE71 has a set of Hoshino Impul rims, a set of SSR Mk I rims, a set of CibiƩ fog lights and now OST-071! So he definitely has good taste! Thumbs up!

1982 - TA60 Carina 4dr sedan - fun cruiser
1983 - AE86 Sprinter Trueno - import project
2013 - Honda Civic sport - daily driver
2004 - AEU86 dot ORG - daily domain

Support our forum, buy from the AEU86 shop:
[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]
Visit this user's website Find all posts by this user
01-26-2021, 08:53 PM
Post: #3
OST-071: For an AE71 - Largeport for a liftback
(01-25-2021 10:18 PM)banpei Wrote:  The owner of the AE71 has a set of Hoshino Impul rims, a set of SSR Mk I rims, a set of CibiĆ© fog lights and now OST-071! So he definitely has good taste! Thumbs up!
Wink




So... the first order of business is to acquire a 4AGE - not so easy anymore, this one took about 2 months for my client to find.

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]

It is an early 1989 (10/1988 built) 4AGE (vin number tag on engine traced using toyodiy) that was originally delivered to Canada.



I got the engine on a stand.....

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]



and began dismantling the engine..... As more of my clients are wanting complete engines, this tool is quite handy, jaws are a good fit

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]



Head gets pulled..... damn.... not good news

EVERY ONE of the cams journals is seriously damaged...... Sad

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]



How bad...????

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]


While this can be repaired - the time and effort is more then finding, and paying for another head.

Another head is found, and it is in very nice condition.

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]


and un-machined.......

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]


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
01-27-2021, 07:20 PM
Post: #4
OST-071: For an AE71 - Largeport for a liftback
from another forum Wrote:clean car

the gear is often too close to oil pump case, for most tools to fit between
If the gear is really stuck on there, I've seem pieces broken from the edge of the gear... or the tool
Half of em I drill & tap/use a heavy duty puller on stubborn crank gear
One CA18 pulley made a loud bang when it released. I was taking a break.... then Bammm!! Scared the crap outta me :lol:

strange looking flywheel. Some aftermarket perf upgrade ?.
Then there's that stupid looking distributor cap(came on 1 of my 4AGEs too). Toyota engineer had to be on drugs. Fugly



from another forum Wrote:Flywheel is from a FWD or MR2. Will need a new one for a RWD, the water plumping will also have to be changed or modified. Same here on the distributor cap, I've never seen one like that?
Davew7


[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]

Dist cap is fwd for use in the AE92.


Flywheel is from a Blacktop, and it does work in rwd, I have the same flywheel in Surreptitious - it is around 13#s, so 2-3#s lighter then any other stock flywheel. I think its a score....


I'm hoping ( [Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback] ) that I will not have that bad of an encounter (broken tool, or pulley)



So first things first.... get it all cleaned.


The head.......

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]



and the block.... note already bored, and honed....

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]


getting the block taped up...

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]



as with a number of builds.... this one also gets the metal blackening epoxy coating

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]



By the way..... did you see the repair?





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
02-03-2021, 08:04 PM
Post: #5
OST-071: For an AE71 - Largeport for a liftback
(01-27-2021 07:20 PM)oldeskewltoy Wrote:  By the way..... did you see the repair?

upper water pump mounting point - you can see the heat applied, and the repair inside.

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]



So while the block cures... Head work commences... beginning with a deburr

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]


And a bit closer.....

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]

this piece broke off with very little pressure, it could have ended up swallowed....... Sad




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
02-10-2021, 07:18 PM
Post: #6
OST-071: For an AE71 - Largeport for a liftback
Port work begins....

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]



One down....

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]




further progress.... 3 down

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]



and 3 down on the intake side....

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]



Makin' chunks....... a bit closer view of working an exhaust bowl....

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]


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
02-19-2021, 11:12 PM (This post was last modified: 02-19-2021 11:17 PM by oldeskewltoy.)
Post: #7
OST-071: For an AE71 - Largeport for a liftback
After finishing the porting, the head goes back to the shop for a fresh 3 angle, and of course back cut on the intake valves.

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]


A unique opportunity... 2 heads, side by side, OST-073 on top before work begins, and OST-071 on the bottom showing all the port work and its fresh 3 angle

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]



With the valve job complete, it is time to measure chamber volumes. Head is propped up allowing me to get an accurate measure

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]


and the results.........

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]


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
03-16-2021, 01:08 AM (This post was last modified: 03-16-2021 01:12 AM by oldeskewltoy.)
Post: #8
OST-071: For an AE71 - Largeport for a liftback
Both the head, and the block are back in my hands.

The head has been machined .009" to get chamber volumes back to 36cc, and now it is ready for re-assembly.

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]


Cam clearance were checked and all now set to .008"

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]


I also got the short block back......

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]

....and buttoned up the bottom end. (Nice cross-hatch in that hone job!)

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]

If I hadn't mentioned, I am again using the Flos.ie 4AGE engine bolt kit....

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]


you can easily tell by all the shiny bolts. Note the empty bins on the bottom right: sump, rear seal, and oil pump

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]


Now we wait another month for the correct Cometic gasket to arrive.



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
03-16-2021, 09:42 AM
Post: #9
OST-071: For an AE71 - Largeport for a liftback
Really clean work, as always.

FABRICA MI DIEM, PVNC!
Visit this user's website Find all posts by this user
04-21-2021, 06:42 PM
Post: #10
OST-071: For an AE71 - Largeport for a liftback
It has been over a month.... and I've been busy finishing a few other client's heads.... OST-074, and OST-076 are water cooled 8V Porsche heads - one turbo, one n/a, and OST-072, and OST-073, lets just say... "more to come".............

but for now back to finishing up 071.

Had to share this image.........

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]

The correct head gasket came in 5 weeks after order, installation went smoothly

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]

I now do 6 passes on the head bolts, 2 @25, [email protected], and [email protected] (metal head gasket) Why do I now do 6 passes? I've found that after each pass, the center bolts are no longer the same torque they were, and as you go along the 2nd pass, they even up. With this method, on the 6th pass, you will likely only add turns to the center 2 bolts only.


with the head and block now as one, and the new Cat cams installed.

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]



add in a newly powder coated inner timing cover, and a set of vintage HKS timing pulleys...

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]


set cam timing ever so carefully....


[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]




All that is left is final assembly..... (this pic just before)

[Image: AEU86 AE86 - OST-071: For an AE71 - Larg...a liftback]



a bit 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


Possibly Related Threads...
Thread Author Replies Views Last Post
  OST-077: Nothing double natural about twincharging oldeskewltoy 6 1,526 06-12-2021 09:12 PM
Last Post: oldeskewltoy
  OST-075: Blue(top) Hawaii oldeskewltoy 9 1,523 05-22-2021 01:36 AM
Last Post: oldeskewltoy
  OST-072: Bass Ackwards oldeskewltoy 2 718 04-28-2021 12:22 AM
Last Post: oldeskewltoy
  OST-069: Transformation oldeskewltoy 19 3,951 01-14-2021 04:41 PM
Last Post: mad.matt
  OST-070: 7AGE for an N2 Levin oldeskewltoy 39 8,866 01-05-2021 09:41 PM
Last Post: oldeskewltoy

Forum Jump:


User(s) browsing this thread: 1 Guest(s)

Contact Us | AEU86 | Return to Top | Return to Content | Lite (Archive) Mode | RSS Syndication