Search found 170 matches

by davew7
Fri Sep 07, 2018 4:35 am
Forum: TECH: Corolla AE86
Topic: Hesitation at low rpms
Replies: 7
Views: 407

Re: Hesitation at low rpms

The TPS is a good possibility, but it would not explain the difference you see between a hot and cold engine. The cold engine needs more fuel, i.e. the green sensor, tells the ECU that more fuel is needed but the fuel pressure is not there to deliver it. DaveW7
by davew7
Thu Sep 06, 2018 3:54 am
Forum: TECH: Corolla AE86
Topic: Hesitation at low rpms
Replies: 7
Views: 407

Re: Hesitation at low rpms

You need a richer mixture at throttle tip in. That 30+ year old fuel pump does not have enough pressure to enrich the mixture enough. Pull the fuel line at the filter and verify "deadhead" the line into a pressure gauge. You need a PSI reading in the mid 40's to get a regulated PSI in the ...
by davew7
Sat Aug 18, 2018 6:55 am
Forum: TECH: 4A-GE ENGINE
Topic: 4age engine brackets
Replies: 7
Views: 418

Re: 4age engine brackets

Try searching 4A-GE dimensions by Rick Hargraves
He has detailed prints for fabricating both RH and LH engine mounts. http://www.webgate.net/~rbp/4age.html
DaveW7
by davew7
Fri Aug 10, 2018 5:09 pm
Forum: TECH: 4A-GE ENGINE
Topic: Distributor Pickup Coil Question
Replies: 9
Views: 1052

Re: Distributor Pickup Coil Question

Rick
Thanx for the info, Dave
by davew7
Tue Aug 07, 2018 4:05 am
Forum: TECH: 4A-GE ENGINE
Topic: Distributor Pickup Coil Question
Replies: 9
Views: 1052

Re: Distributor Pickup Coil Question

Rick Did you replace the ignition coil with a stock Toyota coil or did you find a replacement coil with about the same primary resistance. I've been thinking about replacing my 30+ yr old coil, with something that will fire a .040-.044" plug gap.
DaveW7
by davew7
Sat Jul 28, 2018 3:34 am
Forum: TECH: Corolla AE86
Topic: More issues...engine intermittently stumbles under load.
Replies: 21
Views: 1293

Re: More issues...engine intermittently stumbles under load.

I actually have a Brute Power fuel pump, from Rock Auto. I'm very pleased with the pump, and it was on the lower price range in the pump selection group. I would get a new strainer for the pump, But unless you know there are issues with the fuel tank that sound like an extra $. You could always get ...
by davew7
Fri Jul 27, 2018 4:05 am
Forum: TECH: Corolla AE86
Topic: More issues...engine intermittently stumbles under load.
Replies: 21
Views: 1293

Re: More issues...engine intermittently stumbles under load.

The best method for checking pressure is verifying the pressure with and without the vacuum line attached to the PR. 30 PSI fuel pressure is not going to cut it even with vacuum line attached! You really need higher pressure in the 34-35psi at a min with the vacuum attached. For accelerating you nee...
by davew7
Thu Jul 26, 2018 3:21 am
Forum: TECH: Corolla AE86
Topic: More issues...engine intermittently stumbles under load.
Replies: 21
Views: 1293

Re: More issues...engine intermittently stumbles under load.

The input side of the fuel filter is 1/4" NPT, just thread in a pressure gauge there. Min should be around 40 PSI.
DaveW7
by davew7
Thu Jul 19, 2018 4:15 am
Forum: TECH: 4A-GE ENGINE
Topic: Hesitation @ lower rpm
Replies: 4
Views: 496

Re: Hesitation @ lower rpm

Two probable causes, You do not have enough fuel pressure or the TPS functioning. Put a pressure gauge in the fuel line from the pump. The easiest spot is in front of the in-line filter. At a min you need 38-40 PSI. If it below the 38PSI get a new pump and strainer. Check out Rock Auto for a good pr...
by davew7
Thu Jun 28, 2018 4:04 am
Forum: TECH: Corolla AE86
Topic: MR2 7 ribs block for ae86
Replies: 4
Views: 412

Re: MR2 7 ribs block for ae86

It's a 1987 block. DaveW
by davew7
Wed Jun 27, 2018 5:23 am
Forum: OWNERS and BUILDERS
Topic: notnilc20's 1986 ae86 Hatch build/restoration
Replies: 173
Views: 29068

Re: notnilc20's 1986 ae86 Hatch build/restoration

One suggestion on the setting up the TPS. The bottom screw attaching the TPS to the TB, can be a real PITA when it comes to access. $hit can the stock Toyota screws and go to your local hardware store, in my case Home Depot and get two Allen Socket screws. They should be 4mm - 0.7thds x 12mm lg. Lif...
by davew7
Wed Jun 27, 2018 4:40 am
Forum: TECH: Corolla AE86
Topic: MR2 7 ribs block for ae86
Replies: 4
Views: 412

Re: MR2 7 ribs block for ae86

The MR-2 block should swap right over into a GTS, assuming that you have the old RWD engine to change out the water pump, pulleys, manifolds, and flywheel, etc,etc. The only problem I've heard of is that some of the engine block bosses, i.e. engine mounts, where not tape out on the MR-2 blocks. In m...
by davew7
Fri Jun 08, 2018 4:44 am
Forum: Fun Talk
Topic: Reliability
Replies: 6
Views: 588

Re: Reliability

Sorry but long term reliability and cost-efficient vehicle maintenance, is really low on the list for USA mfgr when designing vehicles for the domestic market. The Mfgr's are only looking in terms of warranty requirements. They have three main goals, cost, crash rating, and EPA fuel. Once the vehicl...
by davew7
Tue May 01, 2018 3:36 am
Forum: TECH: Corolla AE86
Topic: Replacing drain cock on block
Replies: 5
Views: 703

Re: Replacing drain cock on block

On one of my 4AGE motors I just used a standard pipe plug and gasket sealer. Should be able to get one at your local hardware store. If it is a real tight clearance requirement, you could get a pipe plug with a Allen Socket Head. Davew7
by davew7
Wed Apr 18, 2018 3:31 am
Forum: TECH: Corolla AE86
Topic: Timing woes and tps
Replies: 26
Views: 1691

Re: Timing woes and tps'

With all those issues, it sounds more and more like your timing belt may have jumped a tooth. How old is the belt? I would remove the front cam belt covers and verify that the cams are set correctly. You probably need to adjust belt tension or replace the belt.
by davew7
Tue Apr 17, 2018 3:38 am
Forum: TECH: Corolla AE86
Topic: Timing woes and tps
Replies: 26
Views: 1691

Re: Timing woes and tps'

As aukword1 mentioned, the outer pulley ring is bonded to the center section of the crank pulley. I used my old the crank damper for another 2 yrs, and the outer ring slowly moved during that time. But it did not separate. After a couple years I replaced the damper with an alloy pulley. Note if you ...
by davew7
Mon Apr 16, 2018 3:56 am
Forum: TECH: Corolla AE86
Topic: Timing woes and tps
Replies: 26
Views: 1691

Re: Timing woes and tps'

One of my 4age's had the crank damper timing mark off by more then 20*. After setting the crank at TDC, I filed a new notch in the outer ring so the timing could be re-set correctly. I then put a paint mark across the rubber ban so I could verify that the outer ring had not moved relative to the inn...
by davew7
Thu Apr 05, 2018 4:01 am
Forum: TECH: 4A-GE ENGINE
Topic: Throttle stop dampener
Replies: 3
Views: 519

Re: Throttle stop dampener

Adjusting the throttle damper will not improve the idle. It only effects the throttle rate of closing. There is a rubber plug on the top of the throttle body. [ Assuming the engine is in good tune ] Under the plug is the adjusting screw you are looking for to smooth out the idle. If the problem is a...
by davew7
Sun Mar 25, 2018 4:18 am
Forum: TECH: Corolla AE86
Topic: Swapping Control Arms for a little more Negative Camber
Replies: 7
Views: 854

Re: Swapping Control Arms for a little more Negative Camber

A 1.5* caster increase will make the steering heavy. I would take a look at the front lower strut bar. You could probably modify the rubber attaching bushing. Reduce the front bushing thickness then add spacers to the back side of the bushing. You could probably add enough spacers to the back side, ...
by davew7
Tue Mar 20, 2018 4:02 am
Forum: TECH: Corolla AE86
Topic: AC Panel Swap
Replies: 9
Views: 2070

Re: AC Panel Swap

Couldn't you used a narrow tie-warp to hold the cable in place, or trim a regular width one down to fit the grove. Davew7
by davew7
Wed Mar 14, 2018 4:26 am
Forum: TECH: Corolla AE86
Topic: Rear toe mishaps!
Replies: 3
Views: 488

Re: Rear toe mishaps!

Do the string alignment also check the panhard rod is not bent or the bushings are off center. There is a chance that if you swap the lower control arms left to right that it may correct the problem. Then again you could end up with the rear axle dog tracking in the opposite direction. When you have...
by davew7
Fri Mar 09, 2018 2:57 am
Forum: TECH: 4A-GE ENGINE
Topic: 4AC Torque Specs
Replies: 3
Views: 665

Re: 4AC Torque Specs

The cam thrust plate is 96-132 in-lbs
Davew7
by davew7
Thu Mar 08, 2018 3:44 am
Forum: TECH: 4A-GE ENGINE
Topic: 4AC Torque Specs
Replies: 3
Views: 665

Re: 4AC Torque Specs

Camshaft sprocket 51-79 ft/lbs
Head/Rocker Arm 62-68 ft/lbs
Flywheel 42-47 ft/lbs
Standard torque pattern for a head, the two center LH & RH bolts, then work back and forth towards the outer most bolts.
Clean and lite lube the hardware, and you be ready to go. Davew7
by davew7
Sun Mar 04, 2018 3:19 am
Forum: TECH: Corolla AE86
Topic: Brake line leak on hardline @ prop valve
Replies: 7
Views: 703

Re: Brake line leak on hardline @ prop valve

Sounds like the power brake system is not holding a vacuum. Inspect the hose fitting on the canister which has an internal check valve, including the grommet, also the hose, and listen for any air leaks around the chamber. If you can borrow a hand vacuum pump and hook it up to the canister, it would...
by davew7
Fri Mar 02, 2018 3:10 am
Forum: TECH: Corolla AE86
Topic: Custom Clutch Line for SR5 to GTS Swaps
Replies: 6
Views: 891

Re: Custom Clutch Line for SR5 to GTS Swaps

Any auto parts store will have generic brake line in lengths like 10", 20", 30" etc. Just measure the length from the M/C to the current SR-5 slave cylinder hose attachment fitting and get a GM brake line that is slightly longer then that dim. If you want the bling then go the braided...
by davew7
Sun Feb 25, 2018 3:35 am
Forum: TECH: 4A-GE ENGINE
Topic: Ignition timing problem
Replies: 50
Views: 5238

Re: fuel line

If you do replace a section of your hard fuel line, make sure the replacement hose is rated for EFI pressures. Davew7
by davew7
Thu Feb 15, 2018 2:48 am
Forum: TECH: Corolla AE86
Topic: My differential exploded...
Replies: 8
Views: 806

Re: My differential exploded...

A possible Toyota option is the MA46 axle used on the light pickups and vans. But only the 2WD Van will have a 4 lug mounting while the others will be 5 or 6 wheel lugs. They are all within a few millimeters of being the same width, but none would not be a direct bolt in. You are probably better off...
by davew7
Wed Feb 07, 2018 4:07 am
Forum: TECH: 4A-GE ENGINE
Topic: She won't start (fuel related)
Replies: 15
Views: 1419

Re: She won't start (fuel related)

It sound like an electrical issue. Odds are low that ALL the injectors are plug up with $hit at one time. I would first just try cleaning the ground connections for the injectors. If that does not solve the problem you should verify that the injectors are getting a signal. Use a noid lite or a VOM [...
by davew7
Wed Feb 07, 2018 3:54 am
Forum: TECH: Corolla AE86
Topic: Rwd 16v rear coolant neck. Repair suggestions. (Pics)
Replies: 11
Views: 1184

Re: Rwd 16v rear coolant neck. Repair suggestions. (Pics)

I removed my "T" extension from the rear coolant neck and just taped threads into the aluminum body for a fitting.
Davew7
by davew7
Sun Feb 04, 2018 3:19 am
Forum: TECH: 4A-GE ENGINE
Topic: Removing 4ag 16v Head
Replies: 7
Views: 799

Re: Removing 4ag 16v Head

These M/Cs use the same size cam shim as the Toyota 4AGE. Honda: (79-83) CB750, CB750C, CB750F, CB750K, CB750SC dohc CB900, CB900C, CB900F, CB1000C, CB1100F, CBX (all) Triumph: Hinckly triples and fours Speed Triple, Tiger, Daytona, Trophy, Sprint Yamaha: SRX250, XT250 (86-00) TT350 XT350 (92-98) XJ...

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