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which piston is number one by Mr Badwrench
Started on: 11-14-2021 12:50 PM
Replies: 8 (163 views)
Last post by: fierofool on 11-23-2021 06:51 PM
Mr Badwrench
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Report this Post11-14-2021 12:50 PM Click Here to See the Profile for Mr BadwrenchSend a Private Message to Mr BadwrenchEdit/Delete MessageReply w/QuoteDirect Link to This Post
which piston is number one? trying to time after putting heads back on v6 1985 2.8? anyone know or have a diagram of123456 pistons locations? thank you
say if I was standing in the back of the car facing the firewall.

[This message has been edited by Mr Badwrench (edited 11-14-2021).]

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Dennis LaGrua
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Report this Post11-14-2021 01:33 PM Click Here to See the Profile for Dennis LaGruaClick Here to Email Dennis LaGruaSend a Private Message to Dennis LaGruaEdit/Delete MessageReply w/QuoteDirect Link to This Post
right side of engine front most plug

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
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[This message has been edited by Dennis LaGrua (edited 11-23-2021).]

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Patrick
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Report this Post11-14-2021 03:38 PM Click Here to See the Profile for PatrickClick Here to Email PatrickSend a Private Message to PatrickEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Mr Badwrench:

which piston is number one? ...if I was standing in the back of the car facing the firewall.


Closest cylinder/piston/plug on your right.

[This message has been edited by Patrick (edited 11-14-2021).]

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fierofool
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Report this Post11-14-2021 06:19 PM Click Here to See the Profile for fierofoolClick Here to visit fierofool's HomePageClick Here to Email fierofoolSend a Private Message to fierofoolEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by Patrick:

Closest cylinder/piston/plug on your right.



Yes. Trunk side of the engine, just above the alternator.

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eti engineer
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Report this Post11-14-2021 07:45 PM Click Here to See the Profile for eti engineerClick Here to Email eti engineerSend a Private Message to eti engineerEdit/Delete MessageReply w/QuoteDirect Link to This Post
[u][/u]
 
quote
Originally posted by Mr Badwrench:

which piston is number one? trying to time after putting heads back on v6 1985 2.8? anyone know or have a diagram of123456 pistons locations? thank you
say if I was standing in the back of the car facing the firewall.





The firing order, in case you need it, is 123456. Simple enough to remember for even me...
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Forrest
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Report this Post11-22-2021 05:12 AM Click Here to See the Profile for ForrestClick Here to Email ForrestSend a Private Message to ForrestEdit/Delete MessageReply w/QuoteDirect Link to This Post
For my 88 and 86 its this one. The above picture might be the same but my eyes understand this one better. To me it looks like 1 is in the wrong position....needs to be moved down a spot on the distributer. Then just work your way around.
When we first got the 88 it was missing so bad I thought they had the wires on wrong. The above picture messed me up until I found this one.


[This message has been edited by Forrest (edited 11-22-2021).]

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fierofool
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Report this Post11-22-2021 07:44 AM Click Here to See the Profile for fierofoolClick Here to visit fierofool's HomePageClick Here to Email fierofoolSend a Private Message to fierofoolEdit/Delete MessageReply w/QuoteDirect Link to This Post
For the Fiero it really doesn't matter where #1 on the distributor is located as long as the engine is at TDC and the #1wire is connected to the terminal the rotor button is pointing at and other plug wires run in sequence.
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eti engineer
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Report this Post11-22-2021 09:15 AM Click Here to See the Profile for eti engineerClick Here to Email eti engineerSend a Private Message to eti engineerEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by fierofool:

For the Fiero it really doesn't matter where #1 on the distributor is located as long as the engine is at TDC and the #1wire is connected to the terminal the rotor button is pointing at and other plug wires run in sequence.


What he said, but I understand what you are saying. I had both schematics. The one I posted popped up first. It just depends on where the rotor is when you install the distributor. It should be close to the 5 or 6 o'clock position for the best results as there isn't a lot of room around the distributor body to be able to rotate it. Unless you have custom ignition wires like I do, cut to different lengths, you could also move them around on the distributor cap as long as you kept the firing order correct, and are at true TDC and not 180 degrees out.

[This message has been edited by eti engineer (edited 11-22-2021).]

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fierofool
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Report this Post11-23-2021 06:51 PM Click Here to See the Profile for fierofoolClick Here to visit fierofool's HomePageClick Here to Email fierofoolSend a Private Message to fierofoolEdit/Delete MessageReply w/QuoteDirect Link to This Post
Orientation of the distributor body is important though. The ICM harness wires are difficult to disconnect if the distributor is turned wrong. I have also encountered interference of the cap hold down screw and a threaded stud on the lower intake when adjusting timing.
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