90 Mustang 2.3 4 cyl LX has bad engine tap/knock. HELP plz.

Tiny
90SVOT3/T4
  • MEMBER
  • 1990 FORD MUSTANG
Mileage- 170,000
My 1990 Ford Mustang LX has a bad knock coming from under the hood. I've talked to many people and mechanics and they've all mostly not known what it is. I know I have a bad clutch, and the knock sometimes stops for short periods of time when driving. Could it be the throw out bearing? Just wanted to see what u guys thought before I spend to much money. And if u could send me a link or email to a part's list for converting a 2.3 liter N/A to the 2.3 liter turbo, like the SVO Mustang or the Merkur XR4TI enigne. thank's alot
i appreciate it.



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Friday, April 13th, 2007 AT 2:57 AM

5 Replies

Tiny
RASMATAZ
  • MEMBER
It doesn't really matter, you already know you have a bad clutch and when you decide to replace it you'll be needing the clutch plate/disc/pressure plate/clutch cover/throwout/release bearing to get it fix right.
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Friday, April 13th, 2007 AT 5:04 AM
Tiny
TAURUSWHEEL
  • MEMBER
Trying to make a radical change from N A to turbo doesn't sound like an easy task, first and foremost would your present engine control system be able to account for this change in it's current program? Likely not, you may end up with troublesome running issues. My opinion if you want more, get a car with the entire engineered deal. Newer vehicles with the whole package also get better mpg then some cobbed-together job, stoplight-to-stoplight dragracing was fun when gas was.35 cents a gallon
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Friday, April 13th, 2007 AT 7:19 AM
Tiny
BIGNICK
  • MEMBER
From what I have been told trying to convert a naturally aspirated engine to turbo is more costly than it's worth. I wanted to install a turbo kit on a 1995 Mitsubishi Eclipse GS years ago and was told engines not designed for turbo applications aren't built to withstand the pressures exerted by turbocchargers, that the cost to convert was more than the car was worth. You would be better off trying to find a wrecked svo with a good motor, although that will be a task in iself as there weren't many of them made and they have become collectors items. If you do find one, I would also check out your state's emissions laws to see if you can get away with it.
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Sunday, April 15th, 2007 AT 1:23 AM
Tiny
CRONO61
  • MEMBER
Not sure about the knock but. By "converting" to you mean strapping a turbo to your current block or putting an svo/merkur/turbocoupe engine in? Well trying to put a turbo on a NA motor is highly not recommended and a ton of work, and usually alot of money. The cast internals found in the NA engines don't accept boost well. On the other hand. Dropping a 2.3 Turbo from a thunderbird TC, an SVO, or an XR4Ti is easy, cheap (depending on where you live), and perfectly safe. Tranny/engine mounts match up, the block is nearly identical (except for the turbo oil lines). The only things you need to change are the exhaust and a very small amount of simple wiring (NAs used a MAF setup while the turbos used VAMs and the computer recives signals in different ways from these 2 sensors - a few easy and safe wiring changes can fix that). Many people have done this swap and are pushing 350+ hp out of the stock block. There are tons of write ups out there and make friends with the guys in the 4cyl section (including myself) to get any extra info you need! Hope that helps
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Monday, April 16th, 2007 AT 11:18 PM
Tiny
MERLIN2021
  • EXPERT
The knock could by a cracked flywheel.
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Tuesday, April 17th, 2007 AT 2:49 AM

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