BC Racing AE86 BR Series Type RA apparently. No idea on compatibility with OEM springs.
However it looks like BC make adjustable perches for various vehicles. So it would be worth
giving them the ID/OD measurements of your springs and ask if they have a perch that would suit.
Search found 2909 matches
- Mon Jan 06, 2025 6:24 pm
- Forum: TECH: Corolla AE86
- Topic: Rear springs
- Replies: 3
- Views: 2212
- Tue Dec 17, 2024 12:23 pm
- Forum: TECH: Corolla AE86
- Topic: Rear springs
- Replies: 3
- Views: 2212
Re: Rear springs
If you only want a small lift you could use adjustable perches with your existing springs...
Cheers... jondee86

Cheers... jondee86
- Tue Dec 03, 2024 7:50 pm
- Forum: OWNERS and BUILDERS
- Topic: Gonna start a build and see where it goes ===> TWINSCREW !!! :-p
- Replies: 235
- Views: 360167
Re: Gonna start a build and see where it goes ===> TWINSCREW !!! :-p
I've always been a fan of the "one car that can do it all" school of thought. And admired the guys who build the sleepers... the Wolves in Sheep's clothing type of thing. The ISF fulfills that description pretty well. I've pushed it hard on a track day and am happy with the way it performs...
- Tue Oct 15, 2024 10:41 pm
- Forum: TECH: 4A-GE ENGINE
- Topic: Carbureting the 4AGE essentials
- Replies: 147
- Views: 203724
Re: Carbureting the 4AGE essentials
The 40's work well for the 4A-F. But the intake ports are maybe half the size of a bigport 4A-GE so there will be a noticable difference in air velocity there, and that's why I was wondering if 45's would be a better match. I have never played with twin-choke carbs myself, so I'm no sort of expert....
- Mon Oct 14, 2024 1:31 pm
- Forum: TECH: 4A-GE ENGINE
- Topic: Carbureting the 4AGE essentials
- Replies: 147
- Views: 203724
Re: Carbureting the 4AGE essentials
Sizing carbs or throttle bodies is mostly dependent on what you intend to use the engine for, and what other mods have been made to the engine. Everything from 40's to 48's have been used on the bigport head, in cars ranging from near stock to fully built racecars. If you were happy with the 40mm So...
- Thu Aug 08, 2024 6:06 pm
- Forum: TECH: Corolla AE86
- Topic: Rear steer
- Replies: 4
- Views: 7805
Re: Rear steer
Unequal length trailing links cause the pinion angle to change when the axle moves up or down. https://www.therangerstation.com/Magazine/winter2007/monstertech/monstertech15.jpg This does not occur if the links are equal length. https://www.therangerstation.com/Magazine/winter2007/monstertech/monste...
- Thu Aug 08, 2024 1:14 am
- Forum: TECH: Corolla AE86
- Topic: Rear steer
- Replies: 4
- Views: 7805
Re: Rear steer
Rear steer aka Roll steer, and interesting enough to force me to consult Google, from where I gleaned this information... Cars with rear live axles, also known as solid axles, tend to not have true bump steer. Since both wheels are connected to a single, rigid member they are incapable of having any...
- Thu Jun 27, 2024 3:41 pm
- Forum: TECH: Inline 6's and V8's (JZ, G, UZ etc...) and Big Sedans
- Topic: 2UR-GSE 5-Liter QuadCam N.A. V8
- Replies: 7
- Views: 13845
Re: 2UR-GSE 5-Liter QuadCam N.A. V8
AFAIK the gears are there to allow the car to meet EPA standards. On the ISF first gear would be useful if you wanted to pull a plough, gears 2 thru 6 are close ratios to keep the engine on the boil when having fun :) Gears 7 and 8 are both overdrive gears so that the car can return decent economy w...
- Tue Jun 11, 2024 3:09 pm
- Forum: TECH: 4A-GE ENGINE
- Topic: Compression reading of 260
- Replies: 3
- Views: 4227
Re: Compression reading of 260
I'd suggest seeing if you can get the cranking pressure under 200psi... around 185-190psi should work with 93 pump gas. There are a lot of variables involved, and some engines will run fine at pressures over 200psi. But high pressures push the engine closer to detonation so best to start low and wor...
- Mon Jun 10, 2024 3:29 pm
- Forum: TECH: 4A-GE ENGINE
- Topic: Compression reading of 260
- Replies: 3
- Views: 4227
Re: Compression reading of 260
Check your cam timing. Intake valves are probably closing too early.
Cheers... jondee86
Cheers... jondee86
- Thu Apr 11, 2024 1:46 am
- Forum: TECH: 4A-GE ENGINE
- Topic: Return #5: Spare engine boogaloo
- Replies: 15
- Views: 22178
Re: Return #5: Spare engine boogaloo
You can talk to Martelius and see if they can do something suitable. According to MRP (who sell these in NZ)... "For ease of shipping and installation, this header comes in 3 pieces and is just slipped together, then bolted in place". That might help if the header has to straddle the steer...
- Sun Mar 31, 2024 6:23 pm
- Forum: TECH: Inline 6's and V8's (JZ, G, UZ etc...) and Big Sedans
- Topic: 2UR-GSE 5-Liter QuadCam N.A. V8
- Replies: 7
- Views: 13845
Re: 2UR-GSE 5-Liter QuadCam N.A. V8
Sturmey Archer gears were pretty deluxe back in the day. My first bike had no gears
and a back-pedal brake. I was hardcore in those days

Cheers... jondee86
and a back-pedal brake. I was hardcore in those days



Cheers... jondee86
- Fri Mar 29, 2024 3:08 pm
- Forum: TECH: 4A-GE ENGINE
- Topic: AE86 MAP sensor values
- Replies: 4
- Views: 6277
Re: AE86 MAP sensor values
Looks like you got good values. By way of comparison here is a generic old school Toyota MAP sensor graph that I pulled from Toyota Autoshop. I've added the kPa values to make life easier :D https://i.imgur.com/dtkLpsP.png I don't think you are going to see 114 kPa on a N.A. engine so I would be inc...
- Fri Mar 29, 2024 2:33 am
- Forum: TECH: 4A-GE ENGINE
- Topic: AE86 MAP sensor values
- Replies: 4
- Views: 6277
Re: AE86 MAP sensor values
I don't remember ever seeing any specific values for the AE86 MAP sensor. When I used the factory sensor on an aftermarket ECU the calibration was basically connect the sensor to the ECU and power it up. Learn the sensor value at 100kPa(abs) and then pull a vacuum on the sensor to say 25kPa(abs) and...
- Mon Mar 25, 2024 6:48 pm
- Forum: TECH: Inline 6's and V8's (JZ, G, UZ etc...) and Big Sedans
- Topic: 2UR-GSE 5-Liter QuadCam N.A. V8
- Replies: 7
- Views: 13845
2UR-GSE 5-Liter QuadCam N.A. V8
Couple this awesome engine to a fast-shifting 8-speed auto with paddles in the Lexus ISF, and you will be begging to be allowed to go to the mall for groceries in mom's car :D :D :mrgreen: For the first Lexus to venture into supercar territory, Toyota threw every trick they knew at making the 2UR a ...
- Thu Mar 21, 2024 11:53 pm
- Forum: TECH: 4A-GE ENGINE
- Topic: Injector firing
- Replies: 10
- Views: 11178
Re: Injector firing
Where's it from?? Extracted from Page 15 of EFI #3 - FUEL DELIVERY AND INJECTION CONTROL article published by Toyota Motor Sales USA. One of many articles that were once available online from a site named Toyota Autoshop 101. It disappeared quite a few years ago :( BTW Phil Bradshaw is alive and ki...
- Tue Mar 19, 2024 12:57 am
- Forum: TECH: 4A-GE ENGINE
- Topic: Injector firing
- Replies: 10
- Views: 11178
Re: Injector firing
When referring to the above diagram, be aware that it shows the injectors being fired twice per 720 degrees. According to Jeremy Ross below 6000 rpm the MR2 ECU (assumed to be the same as the Corolla TVIS) injects half the calculated fuel every revolution. Above 6000 rpm it changes to injecting 100%...
- Fri Mar 15, 2024 4:41 pm
- Forum: TECH: 4A-GE ENGINE
- Topic: Injector firing
- Replies: 10
- Views: 11178
Re: Injector firing
https://i.imgur.com/4YlsdUk.jpg Seems that despite what the 4AGE manual says, both of these strategies may have been used with TVIS engines. AFAIK JDM and UK models only had a single ignition transistor, but USDM may have got two outputs, a 4-tooth reset trigger wheel and grouped injection. Cheers....
- Mon Jan 08, 2024 6:02 pm
- Forum: TECH: Corolla AE86
- Topic: What gear oil to use in T50 and Diff?
- Replies: 9
- Views: 12400
Re: What gear oil to use in T50 and Diff?
Just wondered if there is an issue with mixing synthetic with mineral oils (however small the quantity) for these applications? Good question as usual :) Given that manual transmission oils and differential oils are quite different and have different additive packages, I wouldn't mix those. But I d...
- Mon Jan 08, 2024 12:12 pm
- Forum: TECH: Corolla AE86
- Topic: What gear oil to use in T50 and Diff?
- Replies: 9
- Views: 12400
Re: What gear oil to use in T50 and Diff?
I used, liked, and recommend...
AMSOIL 5W 30 manual synchromesh transmission fluid for the gearbox, and
AMSOIL 75W-90 severe gear oil for the diff.
Cheers... jondee86
AMSOIL 5W 30 manual synchromesh transmission fluid for the gearbox, and
AMSOIL 75W-90 severe gear oil for the diff.
Cheers... jondee86
- Thu Jan 04, 2024 8:18 pm
- Forum: TECH: 4A-GE ENGINE
- Topic: BT 20V TPS tuning
- Replies: 5
- Views: 6966
Re: BT 20V TPS tuning
I'm gonna check out that thread jondee, as for the image from the FSM, I have looked at this in detail for quite a while but still find it unclear (due to the pins being different from what the FSM thinks there should be for a blacktop). Appreciate the help though. Actually... I just had a look at ...
- Wed Jan 03, 2024 8:53 pm
- Forum: OWNERS and BUILDERS
- Topic: My 2024 4AGE 16v build
- Replies: 29
- Views: 29676
Re: My 2024 4AGE 16v build
Please help me figure out adding pictures. My photos are too big in size to be added :cry: To posts pics you need to resize them so that the maximum dimension is 1280 or less (or whatever max size this site says) and then upload them to an image hosting site. Copy the link provided by the hosting s...
- Sat Dec 30, 2023 12:51 pm
- Forum: TECH: 4A-GE ENGINE
- Topic: BT 20V TPS tuning
- Replies: 5
- Views: 6966
Re: BT 20V TPS tuning
I remember BT hesitation being a hot topic at one time... common problem with transplants and modified cars.
Some chat here... https://www.club4ag.com/forums/viewtopic.php?t=17124
Good luck... jondee86
Some chat here... https://www.club4ag.com/forums/viewtopic.php?t=17124
Good luck... jondee86
- Sat Dec 23, 2023 12:01 pm
- Forum: TECH: 4A-GE ENGINE
- Topic: BT 20V TPS tuning
- Replies: 5
- Views: 6966
Re: BT 20V TPS tuning

Cheers... jondee86
- Sat Nov 11, 2023 4:37 pm
- Forum: TECH: 4A-GE ENGINE
- Topic: I have a built 7A motor. Need some advice
- Replies: 5
- Views: 8699
Re: I have a built 7A motor. Need some advice
I want to rotate more but can not. Any ideas. Any one had this problem. You could try pulling the distributor and retarding (?) it one tooth. That should put you at the other end of the adjustment and allow you to dial in more advance. Can't say if that will sort the problem, but I remember doing i...
- Thu Oct 26, 2023 10:45 pm
- Forum: TECH: Corolla AE86
- Topic: Wanting to replace Kelford 193-C Camshafts
- Replies: 13
- Views: 26259
Re: Wanting to replace Kelforf 193-C Camshafts
Mechanically there is no problem. Just drop the new cams in, check the valve clearances, set the cam timing and you are good to go. Without going back through all your earlier posts, IIRC you packed this engine with a lot of high performance/race orientated parts, and chose long duration cams. There...
- Sun Oct 22, 2023 12:55 pm
- Forum: TECH: Corolla AE86
- Topic: Wanting to replace Kelford 193-C Camshafts
- Replies: 13
- Views: 26259
Re: Wanting to replace Kelforf 193-C Camshafts
Whilst l appreciate your post is about changing the cams it maybe possible to get closer to your requirements withcareful tuning of camshafts and ecu. Having less overlap at TDC will help idle, retard inlet and advance exhaust cams to get less overlap. Cold and hot starts are all about ecu calibrat...
- Fri Oct 13, 2023 7:02 pm
- Forum: TECH: 4A-GE ENGINE
- Topic: Good High tech 4AG info
- Replies: 4
- Views: 9477
Re: Good High tech 4AG info
Watched the last 3 episodes and have to admire the dedication of the characters. But I do find it odd that with an engine they are revving to 10,500rpm they didn't have two-stage rev limiter set on their ECU. Turbo engines keep making power and will eagerly over-rev given the chance. And high rpm is...
- Sat Sep 16, 2023 3:48 pm
- Forum: OWNERS and BUILDERS
- Topic: Gonna start a build and see where it goes ===> TWINSCREW !!! :-p
- Replies: 235
- Views: 360167
Re: Gonna start a build and see where it goes ===> TWINSCREW !!! :-p
As Kenny Rogers sings... You've got to know when to hold 'em, Know when to fold 'em ... and after more than 30 years of loving my 86's the time was right to walk away. I learned a lot from them, but as you know, you don't ever want to stop learning. So I had a fling with a Euro car... enough to know...
- Tue Sep 12, 2023 11:40 pm
- Forum: TECH: 4A-GE ENGINE
- Topic: 20v Blacktop oil temperature high with cooler
- Replies: 7
- Views: 10462
Re: 20v Blacktop oil temperature high with cooler
Good sleuthing :) Precision gauges that actually indicate the true temperature are usually sold as a factory calibrated matched pair (gauge plus sensor). As mentioned in that article, trying to match a sensor and a gauge from different manufacturers can give less than satisfactory results. In the sh...