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| Help! Replacing lower intake. Any suggestions on better parts to replace? (Page 1/2) |
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TheWonkiestThing
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MAR 17, 06:02 PM
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Hey I just got this lovely 88 Formula 5 speed a year ago. I'm probably way to young to be into Fiero's as it was made 9 years before I was born but ever since my Dad told me about them (although he was more into F-Bodys) I couldn't stop wanting one. And so here we are, I got the replacement intake from eBay and all the necessary Fel-Pro gaskets. I would like to replace everything down there with either more reliable or better performing parts. I've already got all of the replacement cooling system sensors (180 thermostat with the fan switch, etc.) But have yet to buy any fuel system parts or air intake sensors. I've been looking at the Fiero store 17lb injectors and was wondering if they were worth it on a stock motor with bolt on. So any suggestions on any better performing parts would be greatly appreciated. Also some tips on things to look out for while I'm doing the work would help as well. I'm not a professional mechanic by any means just a lot of backyard mechanic stuff. I've done this sorta job on my s-10 so it's not completely untreaded waters for me.
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fierofool
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MAR 17, 06:38 PM
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Hey, you're never too young for a Fiero (Unless you are too young for a license). Welcome.
17# injectors are too heavy for the 2.8. It will probably run rich. I would suggest you send your stock injectors out to be cleaned and flow matched. It will run much better and will be cheaper than replacing them.
I would also suggest that you put a stock 195 thermostat in. You can install Rodney Dickmans low temp switch that turns the fan on at about 210, I think and then off at 200. With the 195 thermostat, that will keep the engine operating in the proper temp range and will kick on the cooling fan before temperature rises to a point that may be difficult to bring down. I'm running the 195 and 210 combiation in both my cars and it stopped overheating, even when sitting in Atlanta traffic. I originally had a 180 thermostat in my 86 and it just never got good gas mileage and the heater didn't heat very well.
While you have the intake off would be a good time to replace the troublesome plastic vacuum lines with Rodney Dickmans stainless steel lines as well as his replacement EGR tube. Both those items are likely to fail at some time and are more difficult to fix/replace later on.
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TheWonkiestThing
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MAR 17, 07:28 PM
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Thank you! Very helpful! Send the injectors where specifically? I'm guessing this is something I can't do myself. Yeah I agree with the 180 thermostat. Doesn't seem happy running at that temp.
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Notorio
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MAR 17, 07:35 PM
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Here is the service I used. Don't know how they work yet b/c the engine is still in pieces, but the turnaround time was good.
Cruzin Performance
1509 N. Orchard Dr
Traverse City, MI 49686
Click here ...[This message has been edited by Notorio (edited 03-17-2019).]
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fierofool
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MAR 17, 07:58 PM
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Neils88
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MAR 17, 09:17 PM
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Welcome to PFF! 
I'd be cautious about just changing parts for the sake of "improving reliability". Fiero parts are notorious for being DOA (dead on arrival). If you change too many parts without needing to, you can suddenly end up with multi-part failures that can be incredibly difficult to diagnose and correct. You should map out a plan of what you are actually trying to achieve.
Good luck with the project! 
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Tha Driver
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MAR 18, 01:40 AM
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| quote | Originally posted by fierofool:
Hey, you're never too young for a Fiero (Unless you are too young for a license). Welcome.
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I got my first car when I was 14 (long story). It was also the first total I rebuilt...
Just say'in...
~ Paul
aka "Tha Driver"
Custom Fiberglass Parts
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olejoedad
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MAR 18, 07:44 AM
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Do not cut the intake manifold gaskets!
Loosen the rockers and remove the pushrods!
Readjust the valves per Factory Service Manual specs!
Edit to add....
If it isn't broken, don't fix it![This message has been edited by olejoedad (edited 03-18-2019).]
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fierofool
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MAR 18, 12:00 PM
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Another way to avoid cutting the lower intake gaskets and also avoid upsetting the adjustment of the valves is to get the Lisle Tools pushrod removal tool. The tool depresses the spring and swings the rocker off the pushrod. Just keep the pushrods in order so that they go back on the same valve.
https://www.lislecorp.com/s...ols/push-rod-remover[This message has been edited by fierofool (edited 03-18-2019).]
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olejoedad
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MAR 18, 01:06 PM
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Good suggestion by fierofool, but I would still check adjustment after assembly.
Someone before you may have misadjusted the valvetrain.
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