Search found 2183 matches
- Thu May 06, 2021 10:04 am
- Forum: TECH: 4A-GE ENGINE
- Topic: OST-075: Blue(top) Hawaii
- Replies: 6
- Views: 5520
Re: OST-075: Blue(top) Hawaii
Are those valve seats machined crookedly? Why yes.... yes they are :cry: . And don't ask how they did it... cause I don't even know..... This is just another reason to get the head properly rebuilt.... So, on to deburring the head, and I found this :shock: https://gallery.ostportworks.com/albums/us...
- Wed May 05, 2021 1:10 pm
- Forum: TECH: 4A-GE ENGINE
- Topic: OST-075: Blue(top) Hawaii
- Replies: 6
- Views: 5520
Re: OST-075: Blue(top) Hawaii
A closer look at the valves...... Once you get past the really bad one... do you see it? https://gallery.ostportworks.com/albums/userpics/10005/valves_upon_removal.jpg The TVIS effect.... Valves 1, 4,5, and 8, the valves w/o the TVIS butterflies have far more build up. https://gallery.ostportworks.c...
- Tue May 04, 2021 8:36 am
- Forum: TECH: 4A-GE ENGINE
- Topic: OST-075: Blue(top) Hawaii
- Replies: 6
- Views: 5520
OST-075: Blue(top) Hawaii
https://gallery.ostportworks.com/albums/userpics/10005/normal_ost-075.jpg After discussing this build with my client, he sent me his largeport head, and his Crower cams. https://gallery.ostportworks.com/albums/userpics/10005/Arrived.jpg Unpacked... https://gallery.ostportworks.com/albums/userpics/1...
- Tue Apr 27, 2021 9:21 am
- Forum: TECH: 4A-GE ENGINE
- Topic: OST-072: Bass Ackwards
- Replies: 0
- Views: 3638
OST-072: Bass Ackwards
It is uncommon for me to start, and end a build thread in just the first post - but this wasn't an ordinary build. https://gallery.ostportworks.com/albums/userpics/10005/normal_OST-072.jpg Yep... the image is correct.... This head was just a FUBAR that once finished still came out perfect. It began ...
- Fri Apr 23, 2021 2:21 pm
- Forum: Shops, Manufacturers, and Retailers Only
- Topic: OST Cylinder Head Porting Services
- Replies: 42
- Views: 79327
Re: OST Cylinder Head Porting Services
just an update.....
- Fri Apr 23, 2021 2:02 pm
- Forum: TECH: 4A-GE ENGINE
- Topic: OST-071: For an AE71 - Largeport for a liftback
- Replies: 10
- Views: 9055
Re: OST-071: For an AE71 - Largeport for a liftback
Wrapped up... waiting for client to pick it up https://gallery.ostportworks.com/albums/userpics/10005/finished4.jpg https://gallery.ostportworks.com/albums/userpics/10005/finished3.jpg https://gallery.ostportworks.com/albums/userpics/10005/finished1.jpg https://gallery.ostportworks.com/albums/userpi...
- Wed Apr 21, 2021 8:07 am
- Forum: TECH: 4A-GE ENGINE
- Topic: OST-071: For an AE71 - Largeport for a liftback
- Replies: 10
- Views: 9055
Re: 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 th...
- Mon Mar 29, 2021 10:56 am
- Forum: TECH: 4A-GE ENGINE
- Topic: TRD Gasket, Stock 4age
- Replies: 17
- Views: 20961
Re: TRD Gasket, Stock 4age
I checked the knock pins and they were in correct positions. I checked valve clearances yes. Yes i have compression tester, might test compression next weekend. Plug leads, im not sure :D my coil lead is running very close to valve cover and other plug leads so maybe there is spark jumping somewher...
- Mon Mar 22, 2021 7:22 am
- Forum: TECH: 4A-GE ENGINE
- Topic: TRD Gasket, Stock 4age
- Replies: 17
- Views: 20961
Re: TRD Gasket, Stock 4age
I also dropped poncams in the engine. Now its running. Tomei says that idle remains smooth but my idles very lumpy and shaky, pulls good though i think, better than before. Have i messed something up or is it what it is? I tried my best to adjust the ignition timing, but the mark on the pulley boun...
- Mon Mar 15, 2021 4:12 pm
- Forum: TECH: 4A-GE ENGINE
- Topic: OST-071: For an AE71 - Largeport for a liftback
- Replies: 10
- Views: 9055
Re: 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. https://gallery.ostportworks.com/albums/userpics/10005/normal_20210305_110033~0.jpg Cam clearance were checked and all now set to .008&qu...
- Mon Mar 08, 2021 8:55 am
- Forum: TECH: 4A-GE ENGINE
- Topic: 4AGE black top help
- Replies: 9
- Views: 8435
Re: 4AGE black top help
Blacktop engine manual - https://locost7.info/files/engine/4age_blacktop/bt4-em.pdf All the Blacktop manuals - https://locost7.info/mirror/4age_blacktop.php You wont know until you tear the engine down. Before you order any parts - it it best to get the engine dismantled so you can carefully inspect...
- Sun Mar 07, 2021 7:57 am
- Forum: TECH: 4A-GE ENGINE
- Topic: 4AGE black top help
- Replies: 9
- Views: 8435
Re: 4AGE black top help
with only a small jump after adding oil, I'd say you have a valve problem on cyl 3. Most often it will be a burnt, or bent exhaust valve[s].
- Fri Feb 19, 2021 1:21 pm
- Forum: TECH: 4A-GE ENGINE
- Topic: OST-071: For an AE71 - Largeport for a liftback
- Replies: 10
- Views: 9055
Re: 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. https://gallery.ostportworks.com/albums/userpics/10005/3_angle_and_backcut.jpg A unique opportunity... 2 heads, side by side, OST-073 on top before work begins, and OST-071 o...
- Sun Feb 14, 2021 4:36 pm
- Forum: Fun Talk
- Topic: Shock Dyno Data Anyone?
- Replies: 26
- Views: 28299
Re: Shock Dyno Data Anyone?
OEM replacement in terms of physical size, but with up-rated valving to handle modest lowering and "sporting" spring rates. I believe that OST used 112's and found that he had to be inventive in keeping 4.4 (?) kg/mm springs captive. Cheers... jondee86 That was in my AE86... but that was ...
- Fri Feb 12, 2021 8:53 am
- Forum: TECH: 4A-GE ENGINE
- Topic: OST-070: 7AGE for an N2 Levin
- Replies: 30
- Views: 25611
Re: OST-070: 7AGE for an N2 Levin
nice and detailed build up CR? Any idea how is going to run the trigger (36-1) or he is going to add a Cam position sensor. interested if the owner can share later some numbers or how did go with the output. Thanks compression ratio = 11:1 (-5cc crown) Distributor is planned on to run as cam sensor
- Wed Feb 10, 2021 9:18 am
- Forum: TECH: 4A-GE ENGINE
- Topic: OST-071: For an AE71 - Largeport for a liftback
- Replies: 10
- Views: 9055
Re: OST-071: For an AE71 - Largeport for a liftback
Port work begins.... https://gallery.ostportworks.com/albums/userpics/10005/port_work_begun.jpg One down.... https://gallery.ostportworks.com/albums/userpics/10005/1_down_3_to_go~0.jpg further progress.... 3 down https://gallery.ostportworks.com/albums/userpics/10005/3_down_1_to_go_chambers_and_exha...
- Wed Feb 10, 2021 9:03 am
- Forum: TECH: 4A-GE ENGINE
- Topic: Headache and a Half -starting/rev cut
- Replies: 14
- Views: 13276
Re: Headache and a Half -starting/rev cut
Hmmm, from memory... mid/late 80s Honda 2.0 liter efi uses 240cc low ohm injectors.... Pretty sure they'll do the trick - check Rockauto
- Wed Feb 03, 2021 10:04 am
- Forum: TECH: 4A-GE ENGINE
- Topic: OST-071: For an AE71 - Largeport for a liftback
- Replies: 10
- Views: 9055
Re: OST-071: For an AE71 - Largeport for a liftback
By the way..... did you see the repair? upper water pump mounting point - you can see the heat applied, and the repair inside. https://gallery.ostportworks.com/albums/userpics/10005/block_cleaned_and_bored_before_coating1.jpg So while the block cures... Head work commences... beginning with a debur...
- Fri Jan 29, 2021 9:50 am
- Forum: Fun Talk
- Topic: Shock Dyno Data Anyone?
- Replies: 26
- Views: 28299
Re: Shock Dyno Data Anyone?
didn't see this until now for some reason.......... HTS 112s
- Wed Jan 27, 2021 9:16 am
- Forum: TECH: 4A-GE ENGINE
- Topic: OST-071: For an AE71 - Largeport for a liftback
- Replies: 10
- Views: 9055
Re: OST-071: For an AE71 - Largeport for a liftback
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 w...
- Tue Jan 26, 2021 10:51 am
- Forum: TECH: 4A-GE ENGINE
- Topic: OST-071: For an AE71 - Largeport for a liftback
- Replies: 10
- Views: 9055
Re: OST-071: For an AE71 - Largeport for a liftback
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. https://gallery.ostportworks.com/albums/userpics/10005/engine_arrives0.jpg It is an early 1989 (10/1988 built) 4AGE (vin number tag on engine traced using toyodiy) that w...
- Sun Jan 24, 2021 2:48 pm
- Forum: TECH: 4A-GE ENGINE
- Topic: OST-071: For an AE71 - Largeport for a liftback
- Replies: 10
- Views: 9055
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. https://gallery.ostportworks.com/albums/userpics/10005/recipient_AE71.jpg As you can see, it currently has a clean 4AC engine in it...... https://gallery.ostportworks.com/albums/userpics/1...
- Thu Jan 21, 2021 4:31 pm
- Forum: TECH: 4A-GE ENGINE
- Topic: help a n00b build a 1.8L 4age?
- Replies: 24
- Views: 18598
Re: help a n00b build a 1.8L 4age?
Oldeskewltoy, Also, I tried plugging in your flow data and the results weren't that great. I'm not sure how this software calculates efficiency but basically the cfm data says these heads only flow 49% efficient, and I didn't even get 100hp on the "dyno". That didn't sound correct in my o...
- Fri Jan 15, 2021 9:15 pm
- Forum: TECH: 4A-GE ENGINE
- Topic: TRD Gasket, Stock 4age
- Replies: 17
- Views: 20961
Re: TRD Gasket, Stock 4age
carina4age wrote:Yes, i will check top of the block. Do you know what is the correct tightening torque for that gasket? I have new Toyota OEM headbolts. Also, will the timing marks line up with thinner gasket?
Use pattern in FSM. TRD recommended 48ft/#s(650±20 kg・cm). I recommend doing it in 3 passes: 25, 36, 48
- Thu Jan 14, 2021 7:05 am
- Forum: TECH: 4A-GE ENGINE
- Topic: TRD Gasket, Stock 4age
- Replies: 17
- Views: 20961
Re: TRD Gasket, Stock 4age
Hey, my 16v bigport blew headgasket few days ago and i want to swap it to .8mm trd head gasket to have little bit more power. My engine is completely stock but im going to get the head resurfaced. I just want to know is it possible to use that 0.8 trd gasket with stock engine? yes it is possible to...
- Tue Jan 05, 2021 11:50 am
- Forum: TECH: 4A-GE ENGINE
- Topic: OST-070: 7AGE for an N2 Levin
- Replies: 30
- Views: 25611
Re: OST-070: 7AGE for an N2 Levin
3 injectors?? ;) Did I miss something, or: 1) is that an aftermarket dipstick? 2) does that trigger wheel bolt onto a stock crank pulley? Those are the support pedestals, the injectors go between.... https://gallery.ostportworks.com/albums/userpics/10005/tecart_2panel.jpg That is a factory dipstick...
- Tue Jan 05, 2021 11:34 am
- Forum: TECH: 4A-GE ENGINE
- Topic: OST-069: Transformation
- Replies: 5
- Views: 7966
Re: OST-069: Transformation
SO another Newbie question :angel: 36cc vs 37cc, is there a sweat spot on a 4age, or is this just to get the correct combustion ratio? What is the standard chamber volume, on a 16V Big port? We are fine tuning final compression ratio. In this case 36cc along with his piston choice, and gasket choic...
- Fri Jan 01, 2021 2:24 pm
- Forum: TECH: 4A-GE ENGINE
- Topic: OST-069: Transformation
- Replies: 5
- Views: 7966
Re: OST-069: Transformation
So the head has come back from getting its valve job.... https://gallery.ostportworks.com/albums/userpics/10005/core_shift_correcting_and_valve_job_3_panel.jpg https://gallery.ostportworks.com/albums/userpics/10005/new_valve_job_and_ground_valves.jpg then the client asks me if it is too late to add ...
- Mon Dec 28, 2020 7:30 am
- Forum: TECH: 4A-GE ENGINE
- Topic: OST-070: 7AGE for an N2 Levin
- Replies: 30
- Views: 25611
Re: OST-070: 7AGE for an N2 Levin
Not sure exactly why but I just love your tarp background pictures. They look a big step up in quality - well done. The close up one of the cam wheels could be straight from a commercial. Maybe it's just the bokeh effect but whatever it is keep doing it :D :thumbs: I hope you dind't have to count a...
- Tue Dec 22, 2020 9:59 am
- Forum: TECH: 4A-GE ENGINE
- Topic: OST-070: 7AGE for an N2 Levin
- Replies: 30
- Views: 25611
Re: OST-070: 7AGE for an N2 Levin
Time to get the belt on and set cam timing. But first we have a small problem to deal with... instead of a 116 tooth timing belt, I ended up with a belt with 119 teeth.... https://gallery.ostportworks.com/albums/userpics/10005/timing_belt_2_panel_annoted.jpg ....someone put the wrong belt, into the ...