Search found 647 matches

by totta crolla
Mon Jan 23, 2023 12:43 pm
Forum: TECH: 4A-GE ENGINE
Topic: igf
Replies: 4
Views: 4480

igf

Whilst l know (or thought l knew) what igf does l wondered if anyone knows what it actually monitors as a return to the ecu? I'm chasing a 0° btdc timing issue on a Freedom ecu and when this happens the engine will not start. The display shows 0° btdc in the ign timing log. I did nothing but cleaned...
by totta crolla
Thu Jan 19, 2023 2:10 am
Forum: TECH: 4A-GE ENGINE
Topic: Distributor drive
Replies: 2
Views: 3714

Re: Distributor drive

Thanks Jondee. Good call on the reference mark, used both for depth and tooth position. I know that the pin type can be fitted 180° out and the distributor will only just have enough adjustment to get the timing required. Been there, done that! Pressing the drive on makes sense, if it should come lo...
by totta crolla
Tue Jan 17, 2023 6:47 am
Forum: TECH: 4A-GE ENGINE
Topic: Distributor drive
Replies: 2
Views: 3714

Distributor drive

Has anyone ever removed the distributor drive cog on a SMALLPORT distributor?
There is no pin to remove...
by totta crolla
Fri Dec 16, 2022 11:37 pm
Forum: TECH: 4A-GE ENGINE
Topic: Budget build cheats.
Replies: 28
Views: 11988

Re: Budget build cheats.

Toluene :shock:
We were doing this a long time ago.
Once you get past the crap on the linked page the information is good.
https://knowledgeburrow.com/can-you-add ... -gasoline/
by totta crolla
Fri Dec 09, 2022 9:28 am
Forum: TECH: 4A-GE ENGINE
Topic: Batch injection
Replies: 21
Views: 9688

Re: Batch injection

disconnect the plug at the ECU and disconnect the plugs at the injectors turn the meter on tone connect one side to wire harness 10 and then prob the injector plugs one at the time see when you have tone if they are connected in the harness you will get tone 4 times (one on each plug) good luck Sor...
by totta crolla
Mon Dec 05, 2022 1:01 am
Forum: TECH: 4A-GE ENGINE
Topic: Budget build cheats.
Replies: 28
Views: 11988

Re: Budget build cheats.

Cam timing adjustments to suit the type of competition and with a twin cam engine this can be quite effective. Raise fuel rail pressure using internal pipe restriction (to help engine cooling if you are closing the exhaust valve early as above) The best low down power l ever got was by doing a compr...
by totta crolla
Sun Dec 04, 2022 1:18 pm
Forum: TECH: 4A-GE ENGINE
Topic: Batch injection
Replies: 21
Views: 9688

Re: Batch injection

I agree about the different fuelling strategies. l just needed to know about the wiring so that l could allow for it in my calibration.
Hasn't helped much though, just added to the confusion!
AEM tooth control tables are a law unto themselves.
by totta crolla
Fri Dec 02, 2022 12:29 pm
Forum: TECH: 4A-GE ENGINE
Topic: Batch injection
Replies: 21
Views: 9688

Re: Batch injection

I would guess they would fire in sequence, two outputs to halve the load on them?
My motivation comes and goes these days too, when l need some... l try a different ecu!
by totta crolla
Fri Dec 02, 2022 2:17 am
Forum: TECH: 4A-GE ENGINE
Topic: Batch injection
Replies: 21
Views: 9688

Re: Batch injection

A simple continuity test reveals that on a U.K (map) car #10 and #20 injection outputs are linked in the loom, one trigger from either output fires all four injectors at the same time.
by totta crolla
Thu Dec 01, 2022 1:25 pm
Forum: TECH: 4A-GE ENGINE
Topic: Batch injection
Replies: 21
Views: 9688

Re: Batch injection

The Freedom ECU should be able to drive the injectors separately. A little wire work and a few keystrokes and you're in business. That is assuming you're using the programmable ECU. Group firing with the Freedom should be relatively easy then 8-) What l'm trying to ascertain is if the injector outp...
by totta crolla
Thu Dec 01, 2022 6:54 am
Forum: TECH: 4A-GE ENGINE
Topic: Batch injection
Replies: 21
Views: 9688

Re: Batch injection

That's quite interesting about the outputs being linked in the ecu, l have just checked a Freedom ecu (l don't have a standard ecu) and the outputs are not linked internally. If the linking is done in the loom as the diagram suggests, would it just be case of doing a continuity test between the inje...
by totta crolla
Wed Nov 30, 2022 7:27 am
Forum: TECH: 4A-GE ENGINE
Topic: Batch injection
Replies: 21
Views: 9688

Batch injection

I'm still using the standard wiring loom in my car and l'm once again trying a different ecu.
From the Toyota workshop manual wiring diagram it looks as if all 4 injectors are wired to fire together even though there are two injector outputs labelled for different cylinders.
Can anyone confirm this?
by totta crolla
Sun Nov 20, 2022 6:03 am
Forum: TECH: 4A-GE ENGINE
Topic: Igniter
Replies: 4
Views: 4309

Re: Igniter

Well, you make a very good argument for keeping the distributor! It seems a bit archaic but mine has always worked reliably and efficiently, as stated it is sequential too. This might just be a case of 'just because you can, doesn't really mean you should' Best l find someone who sells distributor c...
by totta crolla
Fri Nov 18, 2022 7:31 am
Forum: TECH: 4A-GE ENGINE
Topic: Igniter
Replies: 4
Views: 4309

Re: Igniter

Great thank you Jondee.
On a 4 cylinder engine the distributor sensors represent cylinder 1 and 4 l guess.
This might be easier to go wasted spark with a coil pack as opposed to coil on plug.
by totta crolla
Thu Nov 17, 2022 12:53 am
Forum: TECH: 4A-GE ENGINE
Topic: Igniter
Replies: 4
Views: 4309

Igniter

After some experimentation it seems the direct igt output from the ecu will drive internal igniter type coil on plug coils. The issue of course is that there is just the one igt output. My ecu has the facility to output igd (the same as a 4agze DLI) and the engine will run with coil on plug in waste...
by totta crolla
Thu Nov 17, 2022 12:37 am
Forum: TECH: Corolla AE86
Topic: Engine mounts
Replies: 2
Views: 4013

Re: Engine mounts

Sounds like a plan. Slightly odd with TRD stuff, l also have some TRD top mounts and there is nothing to distinguish them from standard other than the packaging. The engine mounts are definitely stiffer, l'll try what you suggest and if l find out anything regarding identifying them from part number...
by totta crolla
Tue Nov 15, 2022 9:20 am
Forum: TECH: Corolla AE86
Topic: Engine mounts
Replies: 2
Views: 4013

Engine mounts

I have a selection of AE86 engine mounts and two of them are TRD ones.
The problem?
All of the mounts are mixed up!
Anyone know how to tell the TRD mounts from standard?
by totta crolla
Wed Oct 26, 2022 12:32 am
Forum: TECH: 4A-GE ENGINE
Topic: blue smoke
Replies: 2
Views: 4172

Re: blue smoke

Check to see how much comes out of the engine breather when you rev it to approx 4k in neutral. I would have fitted new rings and honed the bores (as a minimum) before installing the pistons. Can we assume that this blue smoke comes from the exhaust? Greta will pop by and spank your arse for driving...
by totta crolla
Sun Aug 28, 2022 9:03 am
Forum: TECH: Corolla AE86
Topic: Ultimate Steering Rack for the AE86
Replies: 28
Views: 13946

Re: Ultimate Steering Rack for the AE86

That is an interesting article, the Honda system pre-dates Ford by more than 10 Years. Lexus used, l assume, a fbw steering system on the first GS450h It was designed to limit input correction when correcting oversteer, presumably they were mitigating an instant torque increase from the electric mot...
by totta crolla
Sun Aug 28, 2022 1:08 am
Forum: TECH: Corolla AE86
Topic: Ultimate Steering Rack for the AE86
Replies: 28
Views: 13946

Re: Ultimate Steering Rack for the AE86

Yes JD it was a single adjuster type. l had a chat with the owner of the car and he is using the manual adjuster from the manufacturer in the link above. The positive to the conversion is the facility to use a 2.5 turn rack without added weight. Personally l think that the factory power steering is ...
by totta crolla
Fri Aug 26, 2022 12:48 pm
Forum: TECH: Corolla AE86
Topic: Ultimate Steering Rack for the AE86
Replies: 28
Views: 13946

Re: Ultimate Steering Rack for the AE86

So today l got to try a Vauxhall Corsa electric steering column converted to an AE86 with a quick rack. This system included an adjustable weight control. Whilst l remain very impressed with the lack of kick back through the steering wheel it really didn't matter where the weight control was set the...
by totta crolla
Mon Aug 08, 2022 3:50 am
Forum: TECH: Corolla AE86
Topic: Stock 5 speed 550hp 4AG AE
Replies: 7
Views: 6386

Re: Stock 5 speed 550hp 4AG AE

This Ford oil.
Is it deep red by any chance?
by totta crolla
Fri Aug 05, 2022 2:33 am
Forum: TECH: Corolla AE86
Topic: Ultimate Steering Rack for the AE86
Replies: 28
Views: 13946

Re: Ultimate Steering Rack for the AE86

Having just spent two Years testing and developing autonomous cars l can safely say that the starting point with steering is far from ideal! Getting back to "ultimate" steering l would be looking at a gts manual rack, power steering arms with corrected bumpsteer and reduced caster. I might...
by totta crolla
Thu Aug 04, 2022 12:37 am
Forum: TECH: Corolla AE86
Topic: Ultimate Steering Rack for the AE86
Replies: 28
Views: 13946

Re: Ultimate Steering Rack for the AE86

Most modern cars with stability control use electric P/S and have an angle sensor built into the column. Apparently the E12 Corolla needs an ecu re-set if new steering parts are fitted. My E12 steering went into error mode and switched off after the front end slid on a wet cattle grid. l got away wi...
by totta crolla
Wed Aug 03, 2022 2:54 am
Forum: TECH: Corolla AE86
Topic: Ultimate Steering Rack for the AE86
Replies: 28
Views: 13946

Re: Ultimate Steering Rack for the AE86

Here in the U.K by far the most popular electric conversion uses a Vauxhall Corsa power steered column. Adjustment of feel can be achieved with this: https://vi.raptor.ebaydesc.com/ws/eBayISAPI.dll?ViewItemDescV4&item=322372412305&category=9886&pm=1&ds=0&t=1658306314000&ver=0...
by totta crolla
Thu Jul 28, 2022 5:48 am
Forum: TECH: Corolla AE86
Topic: Ultimate Steering Rack for the AE86
Replies: 28
Views: 13946

Re: Ultimate Steering Rack for the AE86

I really like the standard power steering, not over assisted and nicely weighted at speed. Spaghetti arms are bad but so is streering that is so heavy that accurate inputs become difficult. The T3 steering arms look good for a power steered car and with the necessary bump steer correction they could...
by totta crolla
Wed Jul 27, 2022 5:44 am
Forum: TECH: Corolla AE86
Topic: Ultimate Steering Rack for the AE86
Replies: 28
Views: 13946

Re: Ultimate Steering Rack for the AE86

AE86 power steering arms used with a standard non-power steered rack gives almost exactly the same effective ratio as the Quaife steering rack. Power steering arms and a Quaife rack might be extremely sensitive in a straight line, you could increase the caster to help straight line stability but thi...
by totta crolla
Mon Jun 27, 2022 12:33 am
Forum: TECH: Corolla AE86
Topic: Relays
Replies: 6
Views: 5679

Re: Relays

Thank you JD l remember many Years ago making a simple and cheap alarm for a barn door. It used a reed switch, 12v battery, relay and car horn. The problem was that the alarm would switch off when the door was closed after entering. I was working with an electrical engineer who offered a simple solu...
by totta crolla
Sun Jun 26, 2022 6:12 am
Forum: TECH: Corolla AE86
Topic: Relays
Replies: 6
Views: 5679

Re: Relays

Something l have noticed is that the fuel pump runs only when the crank sensor returns a signal to the ecu. l guess this is no bad thing but is it correct?
by totta crolla
Fri Jun 24, 2022 3:26 am
Forum: TECH: Corolla AE86
Topic: Relays
Replies: 6
Views: 5679

Re: Relays

Well Jondee.. what can l say?
Thank you so much for taking the time to make such a comprehensive reply.
l will read through it a few times and compare it to what l have done. Thanks again, TC