Corolla Levin Repair, Paint and Tune - WITH VIDEO

[Miguel - Newera]

Looking great there.. You make Portuguese AE86 owners proud!!

What compression pistons will you be using with 304 cams?
I run about 30 Degrees ignition timing at higher revs (On 100 - 102 RON Japanese fuel) with Tomei cams. With a properly balanced crank, etc. 9,250 is safe, although we've set the rev limiter to 8,900 in the interests of longer engine life.

Have you ported the head, etc. to make the best use of those TRD cams?
These will really benefit from a very high quality 4-1 exhaust manifold too.

Maybe try running the car when it's up in the air and use a plastic tube to try and isolate where the sound / vibration's coming from.... I run 4.778 final too and don't have such problem, although the engine's quite loud, so maybe I just can't hear it, lol...

BTW, your car will get noisier with the mods you're planning. In a good way

[DJexor]

looking good apardal! Cant wait to see a movie of the itbs screaming loud!

[apardal]

Hi Miguel, I'm already running Wiseco pistons, 0.8mm head gasket and 0.6mm decked head. By my calculations, I have a little above 12:1 compression ratio.

I'm also running 30 degree of ignition timing on unleaded 98 gas, but I really don't know how to compare this grade to 100-102 RON. With this setup, I hear some pinging, but I hope to get it solved with the ITB's, because the free intake helps lowering the air temperature and the engine spends less energy getting air inside.

The head has already been ported (by me) and I hope it is better than stock! You can see pictures of the work done somewhere along my thread.

I've used a cooper piping to hear knocking but either my engine vibrates a lot, or I have detonation even with 23 degrees of ignition timing.

I have one thing I got to work on. It is the camshaft timing. I can't understand why I can't properly measure the max lift angle on the intake side. I install both camshafts as if they where stock cams. The intake camshaft get at 120BTDC and the exhaust at 110ATDC...

Shouldn't they be both at 110 ?

Best regards

[Miguel - Newera]

it may be that your pre-ignition problem is because you have too much compression at the moment. As you increase cam duration to 304 though, the compression ratio will drop as valves will be open for 304 degrees of rotation rather than 288, so this may help improve matters...

Also, be sure to check valve / piston clearance when fitting the new 304 cams. Although it'll probably be OK there's no point in taking chances.

With regard to timing cams, I've only done it a couple of times myself so I don't want to try and teach you! They're different settings for intake & exhaust, not the same. Check say the "Schrick" camshaft website or similar / do a search on google and make sure you understand how to set cams up. I know you realise this is important.

If you're still having problems with pre-ignition once you have the engine running with new cams then perhaps fit a thicker head gasket to reduce compression a tad more.

On mine, I'm running 11.5:1 TPS race pistons, but I don't know if / how much TPS may have skimmed the head, etc. Pre-ignition that can be heard with your home made mic is perhaps fairly heavy - but you can still get pre-ignition that may not be audiable with your kit. Investing in a proper headphone and amplified mic (Det Cans) may be worthwhile..

As a final note it's worth remembering that an increase of compression also means an increase of in cylinder temperatures - which can compound the pre-ignition problems also as well as accelerating wear, etc.

Your project's one of the more interesting ones here - Hope you persevere and get it running perfectly soon - You deserve every success!

[alimonos]

apardal Wrote:I install both camshafts as if they where stock cams. The intake camshaft get at 120BTDC and the exhaust at 110ATDC...

Shouldn't they be both at 110 ?

Best regards

the cams didn't come with an installation card saying for example that the intake must have full lift after rotating the crank 110degrees from 0 point?

[apardal]

alimonos, I do not have the installation card. I followed the recommendations that can be read in the club4ag's tech reference. Max lift for both is at 100 degrees.

I was able to put the exhaust camshaft at 100 degrees, no sweat. I installed this camshaft as the Toyota manual recommends and I measured max lift at 110 degrees. Then I rotated the cam gears until I got 100.

The intake was not that easy. For some reason, the measurement didn't work the same way for the intake side. If I install it as the Toyota manual says, I'll read 120 degrees when I think I should read 110.

Miguel, I've already ran the engine with these camshafts and stock intake manifold and although the pinging almost disappeared, the performance is worse. That is, I think, because what I've said earlier that the engine needs more air and the restrictions from the stock manifold are too much. Air gets hotter and the engine needs to spend more energy sucking air.

Thank you for your comments

Best regards

[robokill]

hey apardal the power readings are they on the crank or on the wheels ?

[apardal]

robokill, it is power at the crank. It would be a little far fetched to have that kind of power to the wheels with my setup!!

Anyways, that dyno usually "gives" power that the engines don't have...

Between 150 and 155 at the crank might be a little more realistic.

Best regards

[apardal]

After many hours around the engine, here are this weekend's pics and VIDEO.

First two photos: test fitting





After first run.



VIDEO! :lol:

YouTube - apardal AE86 - 2

Best regards

[JonnyAE86]

Cant wait for the new dyno