Search found 2109 matches

by oldeskewltoy
Thu Jul 08, 2021 6:19 pm
Forum: TECH: 4A-GE ENGINE
Topic: Welded injector ports
Replies: 3
Views: 181

Re: Welded injector ports

I have a 200hp+ capable smallport head that had been used with carbs. For some reason the builder decided to weld up the injection ports rather than plugging them. Any thoughts as to whether it might be salvagable to run with injectors again? If you can get the proper alignment, I see no reason the...
by oldeskewltoy
Fri Jun 25, 2021 2:02 pm
Forum: TECH: 4A-GE ENGINE
Topic: Bigport, Weird engine sound
Replies: 8
Views: 1888

Re: Bigport, Weird engine sound

Hey, last few days the sound has been "normal". It happens when i press throttle slightly, its like valve train sound coming out of intake. Maybe im just listening my engine little bit too closely :D Im still waiting to get my toda cam gears, but when i get them im going to check and adju...
by oldeskewltoy
Sat Jun 19, 2021 7:51 pm
Forum: TECH: 4A-GE ENGINE
Topic: Bigport, Weird engine sound
Replies: 8
Views: 1888

Re: Bigport, Weird engine sound

jondee86 wrote: as I don't hear anything unusual in your video.

Cheers... jondee86



nor did I.....


SOME bigports do develop a vacuum leak at the TVIS butterfly shaft bushings, additionally, a few of these cars also tend to have a slight knocking sound also related to the worn TVIS assembly
by oldeskewltoy
Sat Jun 12, 2021 12:16 pm
Forum: TECH: 4A-GE ENGINE
Topic: OST-077: Nothing double natural about twincharging
Replies: 4
Views: 911

Re: OST-077: Nothing double natural about twincharging

As this is being twincharged (for those unknowing - twincharge is using both a supercharger and turbocharger in the same engine)...... Coming up with a cam for this beast was no easy task. After consulting with the engineers @ Cat camshafts, a "new" camshaft design was built. 258 overall, ...
by oldeskewltoy
Thu Jun 10, 2021 7:22 am
Forum: TECH: ZN6, ZC6 (FR-S,BRZ,86)
Topic: Exploring the 4U-GSE/FA20
Replies: 12
Views: 16098

Re: Exploring the 4U-GSE/FA20

zze86 wrote:Old but....any updates?


sorry... I've been too busy with clients to explore further......
by oldeskewltoy
Thu Jun 10, 2021 7:19 am
Forum: TECH: Corolla AE86
Topic: AE86 Automatic transmission
Replies: 3
Views: 904

Re: AE86 Automatic transmission

Hi. I have a Blacktop that is being fitted to an automatic trans from a ae86 rwd. Little tricky but flexplate is from MR2 for the 8 bolt crank. My question is this, did AE86 autos use a plate like a spacer between the flexplate and crank? The flexplate that came off the blacktop has that plate behi...
by oldeskewltoy
Mon Jun 07, 2021 9:13 am
Forum: TECH: 4A-GE ENGINE
Topic: OST-077: Nothing double natural about twincharging
Replies: 4
Views: 911

Re: OST-077: Nothing double natural about twincharging

https://gallery.ostportworks.com/albums/userpics/10005/4_down_all_views_3_panel.jpg With the port work complete, it is off to get its valve job. As this head will be running substantial boost levels, minimum specs (.5mm valve margin) just will not cut it, and the original exhaust valves while still...
by oldeskewltoy
Tue Jun 01, 2021 3:16 pm
Forum: TECH: 4A-GE ENGINE
Topic: OST-077: Nothing double natural about twincharging
Replies: 4
Views: 911

Re: OST-077: Nothing double natural about twincharging

Could you point a tell a bit more about this comment: And as this will be running substantial boost, ARP studs will be used, so clearance is added so the studs can't interfere with oil flow Thx The oil feeds the head at #1 bolt on the exhaust side. Essentially when you use ARP studs, there is a pos...
by oldeskewltoy
Thu May 27, 2021 8:14 am
Forum: TECH: 4A-GE ENGINE
Topic: OST-077: Nothing double natural about twincharging
Replies: 4
Views: 911

Re: OST-077: Nothing double natural about twincharging

A twin charge! That's interesting and I'm looking forward to see this progress! :) ;) 1down https://gallery.ostportworks.com/albums/userpics/10005/1_down_chamber_view~0.jpg As this is a boosted build that will be running up to 40 psi, every effort is being made to minimize detonation, including &qu...
by oldeskewltoy
Mon May 24, 2021 1:18 pm
Forum: TECH: 4A-GE ENGINE
Topic: OST-077: Nothing double natural about twincharging
Replies: 4
Views: 911

OST-077: Nothing double natural about twincharging

https://gallery.ostportworks.com/albums/userpics/10005/ost-077.jpg So in October of 2020 my client contacts me about building him a head for a twincharge build. He'll will be running a supercharger from a Mazda Millenia, and the turbo he is planning on is TD06sl2-20g The head arrives, and gets dism...
by oldeskewltoy
Fri May 21, 2021 4:38 pm
Forum: TECH: 4A-GE ENGINE
Topic: OST-075: Blue(top) Hawaii
Replies: 6
Views: 923

Re: OST-075: Blue(top) Hawaii

I know it's tedious but in my opinion you would be best off to measure it yourself - if they did change the specs at one point who knows what version you have in hand. EDIT: as for the illustration it looks intended as an abstract and not to the actual degree as 8° ATDC isn't anywhere close to what...
by oldeskewltoy
Thu May 20, 2021 9:38 am
Forum: TECH: Corolla AE86
Topic: ECU/tuning
Replies: 9
Views: 1307

Re: ECU/tuning

I suppose that I was thinking of using a smallport engine, and a set of cams with an aftermarket intake manifold and exhaust/header. This would have a static compression ratio in the mid 10:1 range, if I recall correctly. In my experience with Honda B series engines over the years, one did not seem...
by oldeskewltoy
Thu May 20, 2021 9:18 am
Forum: TECH: Corolla AE86
Topic: Reviving an old chassis, alternative parts?
Replies: 14
Views: 2064

Re: Reviving an old chassis, alternative parts?

What do the both of you want when you are finished? It tends to help, if you have a plan first. As far as fuel tanks... Spectra TO1B - when available is the correct aftermarket fuel tank. As far as sending units... one appear to still be available - 83320-19715, the other 2 are no longer available. ...
by oldeskewltoy
Thu May 13, 2021 1:19 pm
Forum: TECH: 4A-GE ENGINE
Topic: OST-075: Blue(top) Hawaii
Replies: 6
Views: 923

Re: OST-075: Blue(top) Hawaii

I enjoy reading these posts. I wish this forum was as active as it was back in the late 1990's. Thank you.... I'm doing my part in keeping the forum alive..... ;) I seen the clearance thing but disregarded the 'hot' part entirely as the seemed in the ballpark for 'cold' - maybe another typo? Have y...
by oldeskewltoy
Mon May 10, 2021 9:36 am
Forum: TECH: 4A-GE ENGINE
Topic: OST-075: Blue(top) Hawaii
Replies: 6
Views: 923

Re: OST-075: Blue(top) Hawaii

I'll venture an uneducated guess. A negative number for the exhaust valve closure, i.e. -8.0 BTDC. Perhaps a negative "before" degree reading equals "after"? PS: Are you keeping the fishing line weight or returning it to the client? The nomenclature is very strange to begin with...
by oldeskewltoy
Fri May 07, 2021 7:33 am
Forum: TECH: Corolla AE86
Topic: ECU/tuning
Replies: 9
Views: 1307

Re: ECU/tuning

What does everyone do for a mild N/A setup? I am not looking to go balls to the wall with the car... Regardless of what is done to the Corolla, my daily will likely be significantly faster anyway. what do you consider "mild"? Stock a 4AGE makes about 112-115hp at the flywheel. Keeping sto...
by oldeskewltoy
Thu May 06, 2021 10:04 am
Forum: TECH: 4A-GE ENGINE
Topic: OST-075: Blue(top) Hawaii
Replies: 6
Views: 923

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...
by oldeskewltoy
Wed May 05, 2021 1:10 pm
Forum: TECH: 4A-GE ENGINE
Topic: OST-075: Blue(top) Hawaii
Replies: 6
Views: 923

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...
by oldeskewltoy
Tue May 04, 2021 8:36 am
Forum: TECH: 4A-GE ENGINE
Topic: OST-075: Blue(top) Hawaii
Replies: 6
Views: 923

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...
by oldeskewltoy
Tue Apr 27, 2021 9:21 am
Forum: TECH: 4A-GE ENGINE
Topic: OST-072: Bass Ackwards
Replies: 0
Views: 526

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 ...
by oldeskewltoy
Fri Apr 23, 2021 2:21 pm
Forum: Shops, Manufacturers, and Retailers Only
Topic: OST Cylinder Head Porting Services
Replies: 38
Views: 41728

Re: OST Cylinder Head Porting Services

just an update.....

Image
by oldeskewltoy
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: 2203

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...
by oldeskewltoy
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: 2203

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...
by oldeskewltoy
Mon Mar 29, 2021 10:56 am
Forum: TECH: 4A-GE ENGINE
Topic: TRD Gasket, Stock 4age
Replies: 17
Views: 3617

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...
by oldeskewltoy
Mon Mar 22, 2021 7:22 am
Forum: TECH: 4A-GE ENGINE
Topic: TRD Gasket, Stock 4age
Replies: 17
Views: 3617

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...
by oldeskewltoy
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: 2203

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...
by oldeskewltoy
Mon Mar 08, 2021 8:55 am
Forum: TECH: 4A-GE ENGINE
Topic: 4AGE black top help
Replies: 9
Views: 1435

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...
by oldeskewltoy
Sun Mar 07, 2021 7:57 am
Forum: TECH: 4A-GE ENGINE
Topic: 4AGE black top help
Replies: 9
Views: 1435

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].
by oldeskewltoy
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: 2203

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...
by oldeskewltoy
Sun Feb 14, 2021 4:36 pm
Forum: Fun Talk
Topic: Shock Dyno Data Anyone?
Replies: 26
Views: 9451

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 ...