OST-050 - a VERY special build
07-11-2018, 06:56 PM
Post: #11
OST-050 - a VERY special build
(07-10-2018 02:06 AM)oldeskewltoy Wrote:  (except deburring the rest of the head)


Intake side....

[Image: AEU86 AE86 - OST-050 - a VERY special build]


The whole head....

[Image: AEU86 AE86 - OST-050 - a VERY special build]



Quote:I wonder......... the unleaded one - 9.4:1, the leaded one 10.0:1???


[Image: AEU86 AE86 - OST-050 - a VERY special build]


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
07-13-2018, 11:52 PM
Post: #12
OST-050 - a VERY special build
Been a while....

part of this build is a complete restoration of the engine back to the condition(appearance) it was 32 years ago. And in that vain I've notice that the block[s] I've worked never looked like they carried paint originally.... and apparently they DIDN'T!

From 2 very reliable sources I've found out that Toyota didn't paint their engine blocks back then, but had the blocks phosphate dipped, that is how Toyota treated the blocks. So in that vain, this block is getting a very similar treatment, the coating on this block will mimic the original, but be a bit harder, longer lasting.

Along with the blocks restoration, the head, including the entire intake, right down to the T/B, has been sent out to be soda-blasted. Once the head is back I'll begin the port work.

before....
[Image: AEU86 AE86 - OST-050 - a VERY special build]

Soda blasting is similar to other surface cleaning(sand blasting, bead blasting) but is completely harmless and water soluble - cleans up with water. I'll have an after pic in about a week.


I did clean and test the AAV (warm-up valve under T/B)... it appears to work...

[Image: AEU86 AE86 - OST-050 - a VERY special build]

with the block prepped for a new coating, and the head and intake off getting soda blasted... the internals wait on a familiar Wink shop cart...

[Image: AEU86 AE86 - OST-050 - a VERY special build]


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
07-16-2018, 06:51 PM
Post: #13
OST-050 - a VERY special build
from another forum Wrote:Are those stock rods with press-fit 18mm wrist pins? I can't remember if those 10:1 pistons had 18mm or 20mm pins.
The 10:1 pistons were available in BOTH 18mm, and 20mm wrist pins........


These are 18mm wrist pins...

oldeskewltoy Wrote:These are 18mm wrist pins...



and a bit lighter too Wink

[Image: AEU86 AE86 - OST-050 - a VERY special build]

I decided along with the new 10:1 pistons, that the light weight wrist pins will work nicely in this engine. The 23+ gram (nearly an ounce) saving will help allow the engine to accelerate/decelerate quicker, as well as lower the stress on the rod.


btw.....not sure anyone picked out the older design head gasket......... That type (from Toyota) hasn't been around in quite a while...



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
  d3nso's little AE86 N2 build d3nso 27 14,452 11-13-2017 11:42 AM
Last Post: mad.matt
  Beams Levin build mannix20vt 5 2,824 01-27-2016 12:39 AM
Last Post: mannix20vt
  Drift missile build [FIN] TuGeTu 7 11,500 11-09-2015 06:13 PM
Last Post: mad.matt
  My panda ae86 build Ellzbmx 10 7,613 06-03-2015 10:56 AM
Last Post: Ellzbmx
  Track AE86 Build from south america Nurburgring 3 3,703 10-30-2013 07:31 PM
Last Post: BOOMEX

Forum Jump:


User(s) browsing this thread: 4 Guest(s)

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