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RSFreak The other "John"

Joined: 23 Jan 2004 Posts: 2946 Location: Renton
1989 Chevrolet Camaro RS
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Posted: Sun Feb 17, 2013 3:23 pm Post subject: Finally got around to doing my plug wires |
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James and I redid the wires on the T/A yesterday. Got the Accel universal wire set, crimping tool, and two sets of Taylor looms. I think it looks much better and I don't have to worry about burning wires on my headers!
I think I will get some brackets that attach to the center bolts on the covers to clean it up a bit.
 _________________ '86 Trans Am - 5.0L TPI - LT1 cam - 700R4 - WS6
'85 Camaro Berlinetta - IROC clone
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aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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Posted: Sun Feb 17, 2013 3:32 pm Post subject: |
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And it only took you like three years to finally do it!
On my old center-bolt engine put little L-brackets on the valve cover bolts and then ran an M8 bolt with a nylocker through one hole of the three-slot Taylor clamps. I ran the front pair of wires through the remaining two holes. This also supports the rear pair as it, combined with the four-slot, holds them up.
Also, while I'm looking at pictures of your engine, what are you doing with the crank breather on there? I can see your PCV valve on the other side!  |
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chevymad Master B
Joined: 11 Jan 2004 Posts: 5476
1987 Pontiac Formula
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Posted: Sun Feb 17, 2013 3:48 pm Post subject: |
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| You gotta let air in somehow. As long as its not a MAF setup the breather works fine. Of course.. is that a maf i see? If so thats a major tuning issue. |
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aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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Posted: Sun Feb 17, 2013 3:49 pm Post subject: |
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| chevymad wrote: | | As long as its not a MAF setup. |
Look just above the shiny Chinese filter, B.
The beauty part is that you can see the capped-off bypass line just inches away on the throttlebody.  |
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chevymad Master B
Joined: 11 Jan 2004 Posts: 5476
1987 Pontiac Formula
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Posted: Sun Feb 17, 2013 3:51 pm Post subject: |
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| Ok John you need to ditch that crankcase filter and get it hooked back into the air intake tract behind the maf. The filter is allowing air to enter the injection without being metered by the maf. Throwing the tune all out of shape. |
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aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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Posted: Sun Feb 17, 2013 3:55 pm Post subject: |
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I've been teasing John about that for awhile now, and I'm reminded every time I see that car.
It's one of those John things that may get fixed eventually (like the burned plug wires) or maybe the apocalypse will happen first, and he won't have to mess with it!  |
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RSFreak The other "John"

Joined: 23 Jan 2004 Posts: 2946 Location: Renton
1989 Chevrolet Camaro RS
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Posted: Sun Feb 17, 2013 5:01 pm Post subject: |
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Yeah, was trying to remember how you had described your setup to me. I got some extra 3 hole looms so I'll give that a try.
As for the breather, I just haven't gotten around to running a hose up to the TB. I also need to get vacuum hose for the PCV valve as it pinches closed under vacuum and makes a horrible squealing noise (some of what I thought was belt squeal). |
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chevymad Master B
Joined: 11 Jan 2004 Posts: 5476
1987 Pontiac Formula
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Posted: Sun Feb 17, 2013 5:05 pm Post subject: |
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| I almost bet the reason it runs well at all is that the hose is pinching shut! One problem almost cancelling another. |
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RSFreak The other "John"

Joined: 23 Jan 2004 Posts: 2946 Location: Renton
1989 Chevrolet Camaro RS
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Posted: Sun Feb 17, 2013 6:25 pm Post subject: |
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| I did not know the breather allow air into the intake! How? It is capped at the TB. |
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chevymad Master B
Joined: 11 Jan 2004 Posts: 5476
1987 Pontiac Formula
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Posted: Sun Feb 17, 2013 6:59 pm Post subject: |
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| Through the pcv! The pcv system is designed to suck air from the air intake through one head, out the other head, through the pcv valve and into the intake. That's why the breather port is between the maf and the throttle body, so the pcv air gets measured before actually entering the intake. |
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iansane Member

Joined: 16 Jan 2004 Posts: 5742 Location: Bothell
1991 Pontiac Trans Am
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Posted: Sun Feb 17, 2013 8:00 pm Post subject: |
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Mucho bettero. Dyno'ing it this year? I'd like to see it turn the rollers on 8cyls again.  _________________
| Quote: | | Sometimes I actually think I'm slightly retarded in the mouth. |
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aaron_sK Member
Joined: 23 Jan 2006 Posts: 8834 Location: Back in beautiful Tacompton
1987 Chevrolet Camaro IROC-Z
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Posted: Sun Feb 17, 2013 8:11 pm Post subject: |
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| chevymad wrote: | | That's why the breather port is between the maf and the throttle body, so the pcv air gets measured before actually entering the intake. |
With the setup you have now the air being drawn through the crankcase is not seen by the ECM, so it does not add fuel to account for it. That will cause an overall lean condition.
If you want to see it in action take the oil cap off while the car is running. The idle will dip and the car will start to run rough.
| iansane wrote: | | I'd like to see it turn the rollers on 8cyls |
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RSFreak The other "John"

Joined: 23 Jan 2004 Posts: 2946 Location: Renton
1989 Chevrolet Camaro RS
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Posted: Sun Feb 17, 2013 8:45 pm Post subject: |
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| iansane wrote: | Mucho bettero. Dyno'ing it this year? I'd like to see it turn the rollers on 8cyls again.  |
Yup! Want to get a few more things done before then. Might try to do a little more tuning, but tuning in $6E isn't very intuitive. |
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Twilightoptics Hardcore (12sec Club)

Joined: 13 Jan 2004 Posts: 9191 Location: Auburn , WA
1987 Chevrolet Camaro IROC-Z
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Posted: Sun Feb 17, 2013 8:56 pm Post subject: |
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Cant tune when you have mechanical issues... _________________ A redline a day keeps the carbon away! |
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RSFreak The other "John"

Joined: 23 Jan 2004 Posts: 2946 Location: Renton
1989 Chevrolet Camaro RS
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Posted: Sun Feb 17, 2013 9:34 pm Post subject: |
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| Twilightoptics wrote: | | Cant tune when you have mechanical issues... |
Since the breather and the pinched off PCV hose are essentially cancelling each other out, I have no mechanical issues. I am more trying to get into tuning theory right now as I have only done minor changes to my prom so far and am still learning.  |
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RSFreak The other "John"

Joined: 23 Jan 2004 Posts: 2946 Location: Renton
1989 Chevrolet Camaro RS
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Posted: Sat Mar 09, 2013 7:41 pm Post subject: |
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I did the wire bracket how Aaron described to me. It worked out really well! And it was cheap!
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91camaro_rs Member

Joined: 03 Dec 2008 Posts: 1712 Location: Fox Island, Wa
1991 Chevrolet Camaro RS
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Posted: Sat Mar 09, 2013 9:55 pm Post subject: |
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ok so now you guys got me thinkin about breathers, on my driver side i have a pcv going to the intake plenum and on pass side i have a breather...is that bad or is it okay cause im MAP and not MAF??? _________________
'91 Camaro RS 5.7 TPI- 700r4- 3.27 posi- headers- chambered exhaust- |
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RSFreak The other "John"

Joined: 23 Jan 2004 Posts: 2946 Location: Renton
1989 Chevrolet Camaro RS
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Posted: Sat Mar 09, 2013 10:35 pm Post subject: |
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It's ok 'cause you are MAP.  |
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Alphius Peanut

Joined: 05 Sep 2006 Posts: 2429 Location: Grand Mound
1984 Chevrolet Camaro Z/28
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Posted: Sat Mar 09, 2013 10:55 pm Post subject: |
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Would still clean things up to run the fresh air line to the TB the way it is supposed to be done. _________________ 84 Camaro Z28 - LS1/T56
85 Silverado - Low and Slow |
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91camaro_rs Member

Joined: 03 Dec 2008 Posts: 1712 Location: Fox Island, Wa
1991 Chevrolet Camaro RS
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Posted: Sun Mar 10, 2013 8:18 pm Post subject: |
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so could i throw another pcv in passenger side with tube to the TB and ditch the breather? _________________
'91 Camaro RS 5.7 TPI- 700r4- 3.27 posi- headers- chambered exhaust- |
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