i think im in trouble.... advice?

[86FieroSE]

I now have a knock in my 2.8.... should I just have the top end rebuilt? Someone said it could be from too much back pressure but I'm not sure. And I still need help on my oil pressure guage problem.

 

[Oreif]

You probably have worn bearings causing the knock. Not sure how many miles the engine has on it, But 5W30 is too thin for a high mileage engine. You could toss in some STP oil treatment or go to a thicker oil like 20W50 which would quit the knock and buy you a month or so, But the engine needs a rebuild. I looked at your oil pressure thread and the "bouncing pressure" could be due to the oil pump going bad. If that is the case, it would kill you bearings.

 

[86FieroSE]

I appreciate the help. Ill be looking into the oil pump and going thicker. I plan on doing the 3800sc swap depending on how much the rebuild wil cost.

 

[Oreif]

I appreciate the help. Ill be looking into the oil pump and going thicker. I plan on doing the 3800sc swap depending on how much the rebuild wil cost.

If you really want to get more power and not spend a lot of money, Then do a 3.4L swap. The 3.4L from a 1993-1995 Camaro/Firebird is a direct drop in. Just toss on the Fiero intake and ignition system and you will have 160hp. You can usually find a 3.4L with decent mileage for under $300.

Step by step instructions are here: http://fiero34swap.eleventenths.org/
With a decent turbo you can get 250-270hp with no problem.

A rebuild kit for a 2.8L runs around $800.

Another decent swap is the mid 80's Cadillac 4.9L V-8. It bolts right up to the stock trans, Gives you 200hp and gobs of low end torque. You can find a few for $500.

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[86FieroSE]

I was thinking about the 3.4 swap. but i think im gonna go all out with the 3800 series 2 supercharged swap.