(Catching up...) OST-079: When Cat Cams went dark
06-10-2022, 06:25 PM
Post: #1
(Catching up...) OST-079: When Cat Cams went dark
"Catching up" posts will be a single post from beginning to end


Inspection after arrival.... ITB smallport build

[Image: AEU86 AE86 - (Catching up...) OST-079: W... went dark]



It received its OST serial #....

[Image: AEU86 AE86 - (Catching up...) OST-079: W... went dark]


and it got cleaned and tumbled... do you see it??

[Image: AEU86 AE86 - (Catching up...) OST-079: W... went dark]


... the massive chunk about to give way

[Image: AEU86 AE86 - (Catching up...) OST-079: W... went dark]
[Image: AEU86 AE86 - (Catching up...) OST-079: W... went dark]


So why, "When Cat Cams went dark"?

This build began in June 2021... the height of the pandemic... with significant supply chain issues.... and of course now is the time the Cat Cams gear cutter (the machine that cuts the distributor drive gear into the exhaust cam) fails... with no spare parts.

Let me back up a bit. OST-078's, and OST-079's cams were to be ordered at the same time, one set was a pair of their 244 cams - OST-078, while OST-079 was to use a pair of Cat's 260/9.0mm cams.... BUT Cat only had one set of blanks with the exhaust cams drive gear cut......

Let me back up a bit further.... About 8 years back I purchased a set of Toda cams....

[Image: AEU86 AE86 - (Catching up...) OST-079: W... went dark]

[Image: AEU86 AE86 - (Catching up...) OST-079: W... went dark]




Are you getting where this is going???

OST-078 did indeed get its Cat cams - you can see the box in this post - http://www.aeu86.org/forum/Thread-OST-07...#pid176705

but, I was out of options with OST-079, so a substitution took place - my set of Toda cams were "sold" to the client.


So back to the head.... and an interesting compound(multi-panel) photo. The center panel shows the 4 intake bowls, while the top/bottom show the matching bowls from each

[Image: AEU86 AE86 - (Catching up...) OST-079: W... went dark]

Btw... this is superb bowl-seat alignment for a smallport head.


Lest us not forget the ITB adapter.... This one is the SQ adapter and I consider this one to be the "middle of the road" of the 3 adapters I know of (1st - Tec-Arts, 2nd - SQ, and last - T3)

2 down....

[Image: AEU86 AE86 - (Catching up...) OST-079: W... went dark]


4 down....

[Image: AEU86 AE86 - (Catching up...) OST-079: W... went dark]




Finally OST-079 was fitted with a set of 1SZ shimless buckets. On the note paper you can see the 2nd 5 digits of the different buckeet part numbers, and how all 8 of the intake shims hit their mark of .008" clearance.

[Image: AEU86 AE86 - (Catching up...) OST-079: W... went dark]

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
06-11-2022, 05:02 AM
Post: #2
(Catching up...) OST-079: When Cat Cams went dark
Looks like incredible work as usual. Global supply was/is still very annoying. Thinks are slowly getting better again though in some areas.

AE86 ex-daily
Visit this user's website Find all posts by this user
06-13-2022, 05:04 PM
Post: #3
(Catching up...) OST-079: When Cat Cams went dark
(06-11-2022 05:02 AM)Bean Wrote:  Looks like incredible work as usual. Global supply was/is still very annoying. Thinks are slowly getting better again though in some areas.
ty for your kind words....... Blush

As far as global supply, I seem to have dealt with the worst of it. Some things are still a bit sketchy*, while other things seem to be biz as usual.

* - OST-082


The SQ adapter is machined for the silvertop throttle bodies - so I'm opening them for blacktop throttles

[Image: AEU86 AE86 - (Catching up...) OST-079: W... went dark]

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-093: My, My, Mystery oldeskewltoy 6 340 08-01-2022 05:11 PM
Last Post: oldeskewltoy
  (Catching up...) OST-085: 7AG Big Valve build w/Cat Cams 262 9.0mm lift cams oldeskewltoy 0 144 07-28-2022 01:18 AM
Last Post: oldeskewltoy
  (Catching up...) OST-083: Salvage operation oldeskewltoy 2 208 07-11-2022 08:32 PM
Last Post: banpei
  (Catching up...) OST-082: Nope, never again... at least not without all the parts oldeskewltoy 0 186 06-28-2022 09:17 PM
Last Post: oldeskewltoy
  (Catching up...) OST-081: STOP... do not touch if you don't know wtf you are doing oldeskewltoy 0 268 06-17-2022 09:07 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