Post by: LostNotForgotton on February 11, 2013, 11:59:53 am
Post by: Fierofool on February 11, 2013, 12:32:27 pm
The timing is picked up from the crankshaft sensor in the side of the block, so the balancer doesn't come into play with DIS. When we stay with the distributor, we keep the Fiero balancer or cut Fiero timing marks in the Camaro balancer because it utilizes the indicator that's on the Fiero timing cover. If you will check the Camaro timing cover, you won't find a timing indicator. BTW, don't use the Camaro timing cover and water pump. Water flows the wrong direction.
Use the Camaro oil pan since it's already designed to accommodate the 3.4 oil pump and pickup then you won't have to notch out the baffle in your 2.8 pan.
Post by: Fierofool on February 11, 2013, 05:15:08 pm
http://www.gmtuners.com/files/index.htm
Post by: LostNotForgotton on February 12, 2013, 02:36:06 pm
Post by: Fierofool on February 12, 2013, 03:40:58 pm
I've read that some say the easiest way to do the harness on the motor is to drop it out. That way you can run wires with the factory harnesswork to make it look more professional. I guess some of it would be easier, too.
In addition to posting in a thread, look at the top right of the page and you'll see Photo Gallery. Post up an album of your projects in there. We'd welcome them. To be sure your pictures don't disappear in time, download PFF's PIP or go to our Administrators Announcements and download our version. They will stay as long as the forum stays. It also eliminates the requirement of clicking a link and going off to another page.
Post by: LostNotForgotton on February 14, 2013, 12:29:43 pm
Post by: Fierofool on February 14, 2013, 02:52:35 pm
Post by: LostNotForgotton on March 04, 2013, 11:40:44 am
Post by: Flyboy81 on March 14, 2013, 11:22:04 pm
Post by: LostNotForgotton on March 19, 2013, 09:30:54 am
Post by: LostNotForgotton on May 28, 2013, 02:50:57 pm
Post by: Fierofool on May 28, 2013, 04:49:45 pm
Good write! Anyone reasonably familiar with the engine should be able to almost picture what you're writing, but pictures would be good. None showing up so far.
Post by: LostNotForgotton on May 29, 2013, 10:07:21 am
Post by: Fierofool on May 29, 2013, 02:10:04 pm
Which temp sensor are you referring to? Gauge or ECM? Remember, there is a matching plug in the passenger side of the front head. For a mental picture, just spin the 1,3,5 cylinder head around. I don't know if the Coolant Temp Sensor would work correctly in that spot, or not.
Check your parts house for the Grand Prix 3800SC plug wire specs. See if they can tell you the lengths. They are pretty long, or you might need to get a set of V8 wires and just cull out 2 of them.
Post by: LostNotForgotton on May 29, 2013, 02:25:54 pm
Post by: Fierofool on May 29, 2013, 06:53:11 pm
Battery Boxes: http://www.westmarine.com/webapp/wcs/stores/servlet/ProductDisplay?productId=102091&catalogId=10001&langId=-1&storeId=11151&storeNum=50523&subdeptNum=50543&classNum=50546#.UaZ_B9jYDTo
Since the engine compartment fan was dropped in 88, probably because they found it wasn't needed, it may be possible to modify the alternator port and direct it into the battery box for fresh air circulation whenever the engine cooling fan comes on.
Post by: Fierofool on May 29, 2013, 07:00:08 pm
http://www.westmarine.com/webapp/wcs/stores/servlet/ProductDisplay?productId=102091&catalogId=10001&langId=-1&storeId=11151&storeNum=50523&subdeptNum=50543&classNum=50546#.UaZ_B9jYDTo
Since they apparently decided that the engine compartment fan wasn't needed and it was dropped in 88, you might also be able to modify the pipe directed at the alternator and extend a hose over to the battery box to provide cooling when the compartment fan kicks on.
Post by: LostNotForgotton on May 30, 2013, 02:27:01 pm
Post by: LostNotForgotton on June 03, 2013, 09:06:34 am
Post by: LostNotForgotton on June 03, 2013, 10:14:28 am
Post by: LostNotForgotton on June 03, 2013, 10:15:58 am
Post by: LostNotForgotton on June 03, 2013, 10:16:56 am
Post by: LostNotForgotton on June 03, 2013, 10:18:41 am
Post by: LostNotForgotton on June 03, 2013, 10:22:48 am
Post by: LostNotForgotton on June 03, 2013, 10:41:34 am
Post by: LostNotForgotton on June 03, 2013, 10:50:40 am
Post by: LostNotForgotton on June 03, 2013, 10:55:16 am
Post by: LostNotForgotton on June 03, 2013, 12:09:03 pm
Post by: Fierofool on June 03, 2013, 01:48:10 pm
Very good progress, and especially for the first startup.
HEY! You never said anything about a MERA in the stable!
Post by: LostNotForgotton on June 03, 2013, 02:48:03 pm
Good eye! You have a keen sense for picking out a MERA from those other 308 kit cars. That is an 88 MERA, 5 speed, leather with t-tops! I don
Post by: Fierofool on June 03, 2013, 06:40:09 pm
I would suspect the O-2 sensor, too. I wouldn't think it's the IAC at this point. I saw lots of other things in the list of parts/upgrades that may be the culprit. Low temp switch doesn't let the engine stay up to the operating temperature that the ECM is looking for so the coolant temp sensor is constantly telling the ECM to enrichen the mixture. Spark plugs could be an issue, too. The large majority feels that the Fiero performs best on the stock Champion plugs. Even a 3.4 upgrade in my 87 runs very well with everything stock except the injectors.
I'm still cannot see your pictures, even by clicking on your attachment link. I have to be signed in, then they appear as small pictures that can be enlarged. Before you get a lot of pictures posted, may I suggest that you download the PIP program that TopNotch has provided? The pictures will show up without using the attachments and other options tab and they won't go away unless you delete them from the posts.
Post by: LostNotForgotton on June 06, 2013, 02:24:20 pm
Post by: LostNotForgotton on June 06, 2013, 03:23:32 pm
Post by: Fierofool on June 06, 2013, 06:50:34 pm
I don't know if anyone here can help you diagnose the problem. We had one person who did the 7730 swap, but he had someone else do it for him. The 4.9 and 3800 doesn't use that ECM. I don't know if Raydar can give any advice. He's done several 3.4 swaps and has been into his 4.9 in pretty good detail. Maybe he'll step in with some guidance.
Did you follow the prescribed method of burping the cooling system? Does the temp gauge hand sit at the 100 mark when you first turn on the ignition? An infrared thermometer might help to verify or dispell the overheating issue. I picked up one at Harbour Freight for $30. But one minor problem isn't bad. The rich burn may go away after you've driven the car enough to 'teach' the ECM. I glanced back through the thread but didn't see, but just out of curiosity, what injectors are you using?
Post by: LostNotForgotton on June 07, 2013, 10:36:25 am
Post by: LostNotForgotton on June 10, 2013, 10:56:01 am
Post by: Fierofool on June 10, 2013, 01:28:54 pm
Now, with your conversion done and when you finish the install on the 3.1, start making plans with your parents to bring both of them down to Run For The Hills on the 3rd weekend of September. It's lots more fun than autocrossing them. Maybe closer to Watkins Glenn type driving.
Post by: Robs Fieros on June 12, 2013, 06:08:16 pm
Post by: LostNotForgotton on June 13, 2013, 12:27:26 pm
As for the coming down to the Run For The Hills event, I will definitely try and make an effort to come. Where is it held at? Georgia is a bit of a haul from Delaware but I'll try and swing it. Maybe I'll make a road trip out of it and swing by Athens to visit the hometown of my favorite band R.E.M. I'm down for any kind of driving event as long as I can drive 8)
Post by: Fierofool on June 13, 2013, 06:08:01 pm
Since Georgia Fieros took over the Run For The Hills, the events have been held mostly in the North Georgia, Tennessee, North and South Carolina areas with the host hotels being anywhere from Dawsonville, Dahlonega, Helen and Clayton, Georgia, Franklin, Cherokee and Asheville, NC. We've had people come from such distances as New England, California, Texas, Wisconsin and Michigan and even Australia to drive in the event.
Usually 150 to +/- 200 miles of the most up and down twistiest roads we can find. There are a couple of short videos on our home page.
Post by: LostNotForgotton on June 18, 2013, 10:12:15 am
Thanks for the breakdown on the AC charging. I don
Post by: LostNotForgotton on June 24, 2013, 09:26:53 pm
My Fiero is the blue 87 Fiero GT with a 3.4 pushrod conversion (from a 95 Camaro) combine with my recently completed 1277330 ECM upgrade with DIS. My goal was to have this swap done before the race. The transmission is the standard TH125 automatic transmission with a shift kit. The car also has Polly Urethane handling kit and engine mounts but the suspension is currently still all stock. The brakes have been slightly upgraded to carbo-met pads, new calipers all around, vented rotors and steel braided brake lines.
My brother's car is the black 86 Fiero SE (2.8 ) with the standard TH125 automatic transmission as well. For the most part his car is considered stock. His upgrades included the Hypertech performance chip, low temp fan switch, Carbomet pads, vented rotors and his biggest upgrade which is a custom made free flowing exhaust system. The suspension is all stock.
As with most Fiero owners the upgrades are always on going. My first round was more to learn the track, the way the car responded to the track and to just get an overall feel of what I can push the limit to. As with my car (The Blue Car) My times got better with each round. I finished 2nd in my class for the day! Not bad and gives a nice plug to the Fiero! My brother was a bit braver out of the gate pushing his limits with every round. In some cases he ended the round with an OC (off-Course) but he's definitely built a good foundation to build on knowing the limits of the car and what to do to improve them. 8)
Post by: Fierofool on June 30, 2013, 08:04:16 am
Is this the first time you've done any performance driving with it? Next step is to get it on a road track. If you could find a track where SCCA runs they will certainly offer something that will get you on the track for some run time. Even with all of the mountain driving I've done during RFTH's, there's nothing like being in an arena where you don't have to worry about other traffic entering or coming around a curve on your side of the road.
Post by: LostNotForgotton on July 01, 2013, 03:40:55 pm
Post by: LostNotForgotton on July 01, 2013, 03:50:35 pm
Post by: LostNotForgotton on July 08, 2013, 08:46:34 pm
Just for kicks are a few pics of my autocross for anyone that can't watch the video
Post by: Flyboy81 on July 11, 2013, 05:08:54 pm
Post by: Robs Fieros on July 14, 2013, 02:29:19 pm
Post by: Fierofool on July 14, 2013, 02:59:40 pm
Post by: LostNotForgotton on December 02, 2013, 11:26:49 am
Post by: LostNotForgotton on December 02, 2013, 11:37:25 am
Post by: TopNotch on December 02, 2013, 11:47:50 am
Post by: LostNotForgotton on December 02, 2013, 11:53:17 am
Post by: GTRS Fiero on October 14, 2017, 11:03:13 pm
Post by: f85gtron on October 19, 2017, 11:08:51 pm
Any ecm will suffer from a poor tune. If the fueling is off, that puts more work on the ecm processor and the effect is lots of calculating and sluggish performance.
Post by: Fierofool on October 20, 2017, 08:29:47 am
Post by: f85gtron on October 20, 2017, 09:08:54 am
Post by: Fierofool on October 20, 2017, 09:35:26 am
Are you ready to do installations for others? Got any prices in mind? Of course, there will need to be variables depending upon how much your customer provides for the conversion.
Post by: Lurate on January 06, 2019, 11:53:46 pm
Post by: GTRS Fiero on January 07, 2019, 07:34:02 am
Post by: GTRS Fiero on January 07, 2019, 07:39:33 am
Post by: Fierofool on January 07, 2019, 08:40:11 am
Post by: GTRS Fiero on January 07, 2019, 09:27:52 am
To go to a 7730, you would need to go to the digital EGR and use the crankshaft sensor that's in the 3.4 block. The 7730 won't run the electro/pneumatic EGR solenoid of the 2.8. A knock sensor would also be required. DIS coilpack and module would be needed, too.
There are different code masks available for the 7730. Depending on which code mask you use, you can use the stock EGR and HEI ignition. The knock sensor can be used or not, depending on whether or not that feature is enabled.
All you really need is the computer, mounting bracket, pigtail, and memcal, plus a bunch of time changing out the wiring and doing the programming. There are a few additional wires in the 7730. The 7730 also has the ability to eliminate some sensors, like the cold start and fan switch.
Post by: pgackerman on January 07, 2019, 10:54:12 am
Know that's the same state as you, but not sure Orlando is closer than Augusta.
Post by: Fierofool on January 07, 2019, 04:59:39 pm
http://www.gmtuners.com/files/Fiero_2.8_to_7730_$88_distributor.pdf
I thought I had read an article by Ryan, centered around the development of the Digital EGR Adapter Plate, that it was developled because the 7730 wouldn't operate the stock EGR solenoid. I can't find that article. Since his pinout for a stock 2.8 with distributor doesn't specify digital, I concede.
It is known, based upon Ryan's development, that the DIS and digital EGR coupled with the 7730 greatly improves the performance and drivability of the engine.
Post by: GTRS Fiero on January 07, 2019, 05:56:11 pm
Fixed your link.
Post by: GTRS Fiero on January 07, 2019, 06:08:51 pm
$58 & $59 work for dizzy or DIS setips
$88, $A1 for DIS setups
It seems that there were some $AF or $8A, or some such, that I had considered.
Post by: GTRS Fiero on January 07, 2019, 06:10:16 pm
Post by: Lurate on January 09, 2019, 11:50:21 am
Post by: Fierofool on January 09, 2019, 01:42:47 pm
Post by: pgackerman on January 10, 2019, 05:08:25 pm
Does the timing change when a 7730 is installed?
IOW, is it still at 10 degrees?
Do the degrees change if you have a 7730 and 1.6 Rockers?
Post by: GTRS Fiero on January 10, 2019, 06:02:24 pm
The timing should be set from the crank position sensor. It isn't static.
Post by: Fierofool on January 10, 2019, 07:32:03 pm
Post by: GTRS Fiero on January 10, 2019, 07:53:43 pm
If you use a knock sensor, the timing is constantly variable.
This is a simplification, but the '7730 uses electro-mechanical timing with DIS and without the knock sensor, or variable electronic timing with the knock sensor.
Post by: pgackerman on January 10, 2019, 10:10:24 pm
So there's no ballpark area around 10 degrees the timing should be set to?
It's not like we can remove the lockdown bolt and expect the new ECM to handle that much timing variation.