Search found 124 matches

by davew7
Mon Oct 02, 2017 5:05 am
Forum: TECH: 4A-GE ENGINE
Topic: 4age with 272 cams and carbs
Replies: 10
Views: 205

Re: 4age with 272 cams and carbs

The easiest way to tell if the mixer is rich at 3000 rpm. Does it run better when it is cold, Vs up to temp. If so, then you have a rich mixer. Dave w7
by davew7
Tue Sep 12, 2017 4:55 am
Forum: TECH: 4A-GE ENGINE
Topic: Small port 4age with big port cams - Timing & Injector questions
Replies: 20
Views: 599

Re: Small port 4age with big port cams - Timing & Injector questions

Another vote for jondee86's
[Outer ring on the OEM crankshaft pulley has moved.]
Dave W
by davew7
Sat Aug 19, 2017 4:43 am
Forum: TECH: Corolla AE86
Topic: Rear brake caliper won't release....rearend upsizing lead to this? (Sorry long)
Replies: 14
Views: 609

Re: Rear brake caliper won't release....rearend upsizing lead to this? (Sorry long)

After your first test drive, do not be surprised if you need to get a brake bias valve, [pressure relief] to limit rear braking with the large size disc in the back. Dave W7.
by davew7
Fri Aug 18, 2017 5:23 am
Forum: TECH: Corolla AE86
Topic: Rear brake caliper won't release....rearend upsizing lead to this? (Sorry long)
Replies: 14
Views: 609

Re: Rear brake caliper won't release....rearend upsizing lead to this? (Sorry long)

I would also go back and take another look at the E-brake cable release on the caliper. Make sure that it's not jammed or rusted. Dave W
by davew7
Fri Aug 18, 2017 5:06 am
Forum: TECH: Corolla AE86
Topic: Rear brake caliper won't release....rearend upsizing lead to this? (Sorry long)
Replies: 14
Views: 609

Re: Rear brake caliper won't release....rearend upsizing lead to this? (Sorry long)

If you opened the bleeder valve and the brake is still locked, I would bet that it has to be something with the caliper. If the caliper is really worn the piston can jam inside the cylinder. Also check ALL the surfaces that the brake pads slide on. I assume that when you cracked the bleeder that flu...
by davew7
Wed Aug 16, 2017 4:59 am
Forum: TECH: Corolla AE86
Topic: Rear brake caliper won't release....rearend upsizing lead to this? (Sorry long)
Replies: 14
Views: 609

Re: Rear brake caliper won't release....rearend upsizing lead to this? (Sorry long)

You may not have enough free travel in the master cylinder push rod, to release the pressure to the rear axle. [ you have to uncover a bleed port in the M/C.] Do you have a return spring on the brake pedal? You also need 1mm of free play at the master clyinder push rod before it engages. It's also p...
by davew7
Tue Aug 15, 2017 4:26 am
Forum: TECH: Corolla AE86
Topic: Clutch pedal out but car wont move
Replies: 19
Views: 800

Re: Clutch pedal out but car wont move

Verify that the clutch plate disc is installed with the correct face against the flywheel. If installed 180 [flipped] the plate will not contact the flywheel. Dave W
by davew7
Wed Aug 09, 2017 5:28 am
Forum: TECH: Corolla AE86
Topic: Redoing Wiring - Advise and Tips Welcome!!
Replies: 2
Views: 217

Re: Redoing Wiring - Advise and Tips Welcome!!

Unless you have major issues with the current harness, I would not go down this rat hole. I spent almost 6 months making a "SIMPLE" harness, eliminating the all the RH to LH conversion wiring, and grounding relays. I would just repair [or replace] any single bad wire(s). You could possibly...
by davew7
Tue Aug 08, 2017 4:56 am
Forum: TECH: 4A-GE ENGINE
Topic: excessive oil pressure on fresh engine rebuild
Replies: 17
Views: 659

Re: excessive oil pressure on fresh engine rebuild

Are you using aftermarket head bolts? They sometimes restrict the oil flow to the clylinder head. The kits typically have one bolt with a reduce shank and under head radius for the oil port location. Dave W
by davew7
Wed Aug 02, 2017 5:57 am
Forum: TECH: Corolla AE86
Topic: AE86 ride height adjustment
Replies: 17
Views: 624

Re: AE86 ride height adjustment

For the setting up, ride height you need locate the car on four level pads. Your typical garage floor can easily be off by a 1/4" [cross-car] plus the floor will slope towards the doors. You need four pads, with the appropriate pad shims leveled to within a 1/16" or better. Mark the floor ...
by davew7
Sun Jul 30, 2017 4:43 am
Forum: TECH: 4A-GE ENGINE
Topic: DIST. FUNCTION
Replies: 4
Views: 228

Re: DIST. FUNCTION

I would just replace the seal on the known good distributor. Dave W7
by davew7
Sun Jul 16, 2017 5:17 am
Forum: TECH: 4A-GE ENGINE
Topic: lifter notch and shim replacement tool
Replies: 5
Views: 360

Re: lifter notch and shim replacement tool

I have to agree with Jondee86 when it comes to holding down the lifter buckets. It is a PITA to hold down the edge of the bucket the tool. If you have more then a couple shims to adjust, it is much easier to lift the cam. If you do not have to adjust the front valves you can actually leave the belt ...
by davew7
Fri Jun 30, 2017 7:01 am
Forum: TECH: 4A-GE ENGINE
Topic: valve buckets loose
Replies: 6
Views: 450

Re: valve buckets loose

There is another possible cause. Check to see if the cam has shifted f/A and is centered over the buckets Vs offset, which would cause the bucket to slide up/dwn Vs rotating. There could be enough tolerance is the cam lobe core to affect just a few buckets. Dave W7
by davew7
Fri Jun 30, 2017 4:50 am
Forum: TECH: 4A-GE ENGINE
Topic: valve buckets loose
Replies: 6
Views: 450

Re: valve buckets loose

You be $crewed! If you had a rare engine, a machine shop could actually sleeve the bucket bores. Time to look for another used head in better condition. You need to find what caused the problem. I would do a close inspection, of the current valves, springs, keepers, relative to cam spec's, before sw...
by davew7
Tue Jun 27, 2017 5:06 am
Forum: TECH: 4A-GE ENGINE
Topic: 2 wires on plug under ignition coil
Replies: 2
Views: 247

Re: 2 wires on plug under ignition coil

It's a 99% chance that if the AE86 wire is white with a black trace color it is a ground wire. Dave W
by davew7
Wed Jun 21, 2017 5:13 am
Forum: TECH: 4A-GE ENGINE
Topic: 4A-GE not responding well to full throttle
Replies: 10
Views: 599

Re: 4A-GE not responding well to full throttle

Just pull a spark plug! It will tell you the mixture, timing, and if you have detonation. If it checks out good, then I would look at the TPS. Dave W
by davew7
Tue Jun 20, 2017 4:23 am
Forum: TECH: 4A-GE ENGINE
Topic: 4A-GE not responding well to full throttle
Replies: 10
Views: 599

Re: 4A-GE not responding well to full throttle

Check your fuel pressure. min is 40 psi. How old is the fuel filter? Check flow out of filter. Dave W7
by davew7
Fri Jun 09, 2017 5:26 am
Forum: TECH: 4A-GE ENGINE
Topic: Have to crank a long time for engine to start when cold.
Replies: 7
Views: 569

Re: Have to crank a long time for engine to start when cold.

There is a cold start temperature sensor on the coolant neck that could be a problem. Verify that the cold start injector is getting an electrical signal. Dave W
by davew7
Thu Jun 01, 2017 4:39 am
Forum: OWNERS and BUILDERS
Topic: Kitsunami's 86 SR5 to GTS swap
Replies: 26
Views: 3340

Re: Kitsunami's 86 SR5 to GTS swap

As old as these 4AGE engines are, you would be lucky to get a good short block from a pick and pull. I would look at getting the crank turned [probably $90] that way you know you have a good bottom end. Do not but bearings until to get the crank back from the machine shop. Dave W
by davew7
Thu Jun 01, 2017 4:10 am
Forum: TECH: Corolla AE86
Topic: Horn don't work help?
Replies: 6
Views: 583

Re: Horn don't work help?

My schematic shows power from the 10A haz/horn fuse [White wire] to the horn. From the horn to the steering column [Green W/red trace] to button. The typical [White w/ black trace] to ground. Dave w
by davew7
Wed May 31, 2017 4:46 am
Forum: TECH: Corolla AE86
Topic: Horn don't work help?
Replies: 6
Views: 583

Re: Horn don't work help?

A test lamp is just a 12V lite with two wires or clips that you can attach any wire to verify that you have current at the the test point. You could actally make one by soliding two wires to a lite bulb. Or buy one at a auto parts. They look like a screw driver with a point on the end and an alligat...
by davew7
Mon May 29, 2017 4:33 am
Forum: TECH: Corolla AE86
Topic: Horn don't work help?
Replies: 6
Views: 583

Re: Horn don't work help?

Use a test lamp and see if you have current going into the horn. If you do not see current at the horn check the fuse. If you do not see current, in either of these cases, you have a problem with a plug connection or a broken wire. Odds are pretty low that the horn actually stopped working. Dave W
by davew7
Thu Apr 27, 2017 4:39 am
Forum: TECH: Corolla AE86
Topic: Does TVIS affect idle?
Replies: 4
Views: 561

Re: Does TVIS affect idle?

I have been running for several years without the TVIS system, and have not had any issues. If the engine is in good shape, you should be able to adjust the throttle stop and air bleed, once it's up to temp. I'm idling just around 1,000 RPM, with a lite Wt flywheel and crank pulley. Before installin...
by davew7
Mon Apr 24, 2017 4:45 am
Forum: TECH: 4A-GE ENGINE
Topic: 4AGZE conversion
Replies: 9
Views: 879

Re: 4AGZE conversion

My first guess would be the ground wires for the ECU. Typically brown wires with an eye connection to the engine. Dave W
by davew7
Fri Apr 07, 2017 5:39 am
Forum: TECH: 4A-GE ENGINE
Topic: Build question
Replies: 4
Views: 714

Re: Build question

You normanlly modify the piston Vs the head. You would not want to countersink the valves into the head which reduces flow. Typically those mild duration cams are not any problem. It's the lift [ ck spec's ] of the camshaft and that would require the piston needing a relief in the valve pockets. If ...
by davew7
Wed Apr 05, 2017 5:26 am
Forum: TECH: 4A-GE ENGINE
Topic: High Oil Pressure AE86
Replies: 4
Views: 605

Re: High Oil Pressure AE86

I would still bet that you have an electrical issue. You will have to trace the wiring and the plug connectors and look for a short or loose/bad connections, which will be a real PITA. If it was me, I would just run a new wire(s). I've spent hours tracking down a single bad connection pin that you c...
by davew7
Mon Apr 03, 2017 5:45 am
Forum: TECH: Corolla AE86
Topic: First drive after gts swap, car struggling.
Replies: 8
Views: 848

Re: First drive after gts swap, car struggling.

Check to see you the spark plug leads are switched at the cap. Dave W
by davew7
Mon Mar 20, 2017 6:02 am
Forum: TECH: 4A-GE ENGINE
Topic: Bad fuel pump?
Replies: 7
Views: 764

Re: Bad fuel pump?

Stalling: check at the throttle for a defective diaphragm at the linkage, which allows the throttle to close to quickly Vs slowing the movement during last dit of travel. Could also be the wax-stat problem. Fuel problem could be the filter. Break the line and insert the fuel line into a bottle and j...
by davew7
Fri Mar 17, 2017 5:32 am
Forum: TECH: Corolla AE86
Topic: Question regarding stock AW11 Oil Cooler in my Eight Six
Replies: 7
Views: 616

Re: Question regarding stock AW11 Oil Cooler in my Eight Six

My 4AGE is out of a AW11. The only real difference is the hose connection on the engine is a long tube with a banjo fitting at 90* Vs straight. As already stated you just need a cooler and hoses. Check out a Farm and Tractor Supply for the hoses. [priced By the ft] less then a 1/4 of the Toyota cost...
by davew7
Tue Mar 14, 2017 6:07 am
Forum: TECH: 4A-GE ENGINE
Topic: High Oil Pressure AE86
Replies: 4
Views: 605

Re: High Oil Pressure AE86

My first guess is an electrical issue.
Your oil pressure sensor is located right under your distributor. Clean and tighten the electrical connection.
Odds are a lot lower that it is a pressure relief valve. Dave W

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