Soooooooorrrrryyyyyy!

Modified by MayanWarrior at 4:16 AM 1/24/2011

DIY 86 Dash Refurbish - Rubberized http://forums.club4ag.com/zerothread?id=52963
www.steerandsave.com

PM or email pls... thnx!

This will NOT work on st 20v since it is a spring tensioner

nice write up! let us know how it goes

but why did your valves bent? stock 4ag is supposed to be a non interference engine isn`t it?

When my 16v belt broke, nothing happened with valves and pistons. A friend said Silver Top 20v is non interference as well.

I didn't know about BlackTop and unfortunately I found out the hard way

ALL my exhaust valves bent. That's some pictured. A friend who's black top snapped a belt as well said his Connecting Rod bent too

i always tought in a 4ag if the timing belt fails nothing would happen to the internals, guess ill be more carefull with it.

FYI, the reason companies "upgrade" to the hydraulic tensioner is to allow for belt stretch after installed, and to allow for the expansion of the block and head when the temps go from -10 to running temperature in cold climates.

That being said, you would want to re-check the belt tension every now and then, but this is an excellent mod if the stock tensioners have been failing for a lot of people.

Excellent write-up, I learned more about machining techniques!

Looking to buy a corolla manual rack and a TRD 3 gear transmission.
*also wtb 4 point roll cage/bar for ae86 coupe

I'm looking to purchase one!

For R&D, I can comfortably say that its holding up well so far.

Test 1: I drove it 2 hours to a friends and 2 hours back, taking it easy with Freeway cruising. I checked the slack and it stayed consistent.

Test 2: Took car on a trailer to All Star Bash X in SoCal and beat it up on track for 2 days! That's 2nd gear and 3rd gear redline, bouncing it off the tack. Checked the tension on the belt every couple sessions and it stayed consistent (whew)

Test 3: Took it to a local track and made 2nd gear and my rev-limiter hate life again with constant abuse. Checked belt tension and stayed consistent and NOTHING backed out of place.

It is save to say that it has taken the constant abuse of bouncing off the limiter and it held tension at a constant. Now, I'm still sensitive to the idea that the Black Top is an interference motor and would feel GREATLY at fault if one of my units were to fail since it is an expensive and time consuming failure if it were to break.

With that, I can not offer any guarantee other than my current experiences that the tension did not loosen and the bolts did not back out. I have a piece of mind ON MY OWN vehicle, but the daily life some of your Corolla's see would greatly put it to a test.

With all that said, how many of you are still interested? What would you pay for a product like this? I do not have any spare hydraulic tensioners so I would need you to send one in. Any comments/opinions/anything is appreciated.

With that, I leave you with a video of the most recent test my Tensioner went through

http://www.vimeo.com/13524887

Supertech valves sell it for 20v

=D

project plan- 86 TWINKIES - has Begun..

Basketweaving M-F 7pm plz contact superstarlevin for enrollment

:thumbup:

To replace the timing tensioner, crank and water pump pulley need to be removed and all 3 front engine cover will also be removed.

This is the pic of the stock factory self adjusting tensioner. Before removing the tensioner, IT'S IMPORTANT TO SET IT TO TDC!!! ( top dead center ) don't take the chance of it will not jump on you. As for my security, I ziptied the timing belt in the mid part where the idler pulley were just to make sure.

This is the pics of both tensioner. Factory stock tensioner to the left and the luis version of manual tensioner.

Before installing the manual tensioner, Put some loctite on the thread and the set screw.

Once it's installed, set the tension on the timing belt as close to factory. This is my measurement before removal of the factory tensioner.

on my measurement is about 6mm slack with the stock factory tensioner so i set it mine 5mm, just 1mm less than before.

after setting my timing belt slack, it's time to lock the manual tensioner. Since the manual tensioner has a lock washer and i've put blue loctite, the amount of torque you'll need is not much. I'll say about 25 lbs to 35 lbs. Over torque may cause to much problem in the future like thread damage, can't removed it, or braking the housing of the tensioner etc. ect... Trust me... if you don't follow luis's instrutions... you can damage the tensioner which there is no warranty for stupidity.

I ran the motor for 30mins at idle, recheck the tension of the belt and the tensioner. drove the car around the my neighborhood for 20min and sorry no drifting yet... at least not in my area. My neighborhood knows my car so i can't do anything stupid with it. I recheck the tension and it's still at 5mm slack.

The next event that i'll be at is at infineon raceway sonoma drift which we will use turn 2 to turn 5 on may 29th. I will recheck the tension after that event. This is the closest event date i can go to test it. There are other events sooner than this like thunderhill rd 2 pro-am but i'm going to manila, philippines for a vacation and maybe compete at lateral drift.


Modified by ayee420 at 10:09 AM 5/9/2011

after the conversion process will it still be a MAF system? im planning on running a dry shot nitrous system on it rather than going turbo.

and when will you be at manila? I've been spectating the lateral drift events going on here for some time now

Modified by redking at 4:08 AM 5/10/2011

This is mainly to be a one time purchase of a tensioner rather than buying a new one every time you replace the timing belt. And the failure rate of using your old tensioner is pretty high especially when you use the car a lot on the track like myself, grip or drifting.

Going nitrous would save you more money than going turbo. I'm in the process of doing nitrous too. I'm actually leaving tomorrow for manila. i'll see you there!

did you change the oil pump to an earlier model oil pump?

After ASB event, 3 stockton 99 speedway, 10 infineon race events! still same as the day i installed it!