93 5.0 bottom end

[r6bullet]

I have been throwing around some differant engine combos, but I need to keep it on a budget since I am building this car with my dad. I was just curious on how much hp the stock 93 bottom end can take? I did a compression test and it was even accross the board, I have no idea how many miles are on the car since the wheel and tire combo messed it up. It has over 140k I'm pretty sure. I also understand that the 93 uses differant pistons, is going to cause a problem? I plan to stay N/A with H/C/I
Thanks guys

 

[blkstangman88]

the stock block i believe can handle about 450hp ive heard. if ur on a tight budget go to a junk yard and get some gt-40p heads($200) and intake($100) off a early 95 to a 97 ford explorer with the 5.0.....the intake is basicly the gt-40 intake. port and polish the heads, through in a e303 cam and some headers and a O/R H-pipe and ull have over 300 hp i believe......anyone else help here!!??

 

[drgn5.0]

With N/A, you will be fine with hyperu's.

 

[408stroker5.0]

1993 5.0HO's (In Your Car) came with Hyperuetic Piston's out of the factory unlike 85' to 92' which came with Forged Piston's. The problem with Hypers. are they can't handle large amount's of forced induction or spray, infact I don't recomend throwing nitrous or boost at them although some people do it and get away with it (But Your Pushing It Big Time). They can't handle detonation very well, and they shatter like glass when the limit's are pushed. They are better and lighter then cast piston's for sure, but if your considering some sort of forced induction or Nitrous, spend some money were it count's and get some good Forged Piston's (SRP, Probe, Speed Pro, etc. etc.) (Probe Makes Excellent Forged Piston's On A Budget) If your sticking with N/A which you said you are planning on doing FOR NOW then the hyper's will do just fine. When it come's time for a rebuild though don't even think of hypers. go for some Forged Unit's. The Price difference is fairly minor so it would basically make no scense not to go with Forged.

 

[r6bullet]

Well I was thinking about this-
Thumper ported heads
Trick Flow stage 1 cam
typhoon intake
70mm throttle body
24# Injectors
and all the other little things to make it work. How does that sound? And I shouldn't have any problem running that on a 93 bottom end right? I was also thinking about getting a main stude girdle, should I even bother?
Thanks guys

 

[5spd GT]

That looks like a pretty stout combo there...you'll be fine...

I'm putting at FTI combo on my 142k stock bottom ended 93....tomorrow...and I'm not worried at all about it handling the power...

Good Luck

 

[r6bullet]

ttt

 

[Sgt.5point0]

You shouldn't have a problem with that setup, everything in my sig is on a stock 93 bottom end and I take it cleanly up to 6100RPM all the time.

The hypers will handle nitrous but you have to be real careful with your timing (base timing or retarded even) and use a wet kit. I've heard of people using 100+ shot on hypers and have had no problems... I'm not risking that much on my car though, 75hp max.

Lean mix + Nitrous + Hypers = Piston bits.

 

[r6bullet]

You shouldn't have a problem with that setup, everything in my sig is on a stock 93 bottom end and I take it cleanly up to 6100RPM all the time.

The hypers will handle nitrous but you have to be real careful with your timing (base timing or retarded even) and use a wet kit. I've heard of people using 100+ shot on hypers and have had no problems... I'm not risking that much on my car though, 75hp max.

Lean mix + Nitrous + Hypers = Piston bits.

I see that you have the TrickFlow Stage 1 cam, I was wondering how you like it? Since that is the same cam I was thinking about getting. And also does anybody think that I should get/need a main stude girlde for the stock bottom end?

 

[Michael Yount]

What were the cranking compression numbers? Having them even is good - that means there's not a cylinder or two that are having bigger problems than the rest. However, on a motor that's simply evenly 'tired' - the numbers will all be at similar levels. But if the number is too low - that's a problem too. Does the car consume oil? With the stock cam and stock compression ratio, and using a screw in fitting, I'd like to see cranking numbers within 5-10% between cylinders, and in the 130-160 range - minimum if you're going to add mods which will ask the engine to do more. If you're down in the 120 psi or below range, I'd consider freshening up the bottom end while you're doing the top end work. Measure - if all's well replace the bearings, and a simple measure/clean up hone job with new rings should re-seal everything. Again - only if the cranking compression numbers are too low.

 

[r6bullet]

It was awhile back when I did the compression check, I think they where all in the 130-140 range. The engine dosen't consume any oil, and runs relly good. So good that my dad dosen't even want to take it apart. But we all know how that goes. I will be out of town for a couple days, when I get back I will do another compression check just to make sure

 

[Michael Yount]

Don't discount dad's wisdom - he's undoubtedly had some experience with these things. What's the cliche - if it ain't broke, don't fix it. For the mods you're considering, the hypereutectic pistons are no problem at all. Be careful what you select for your components. The verts are a bit heavier than others - and maintaining bottom end will be important to good drivability especially if it's an auto. Where many folks get into trouble is with the cam choice. If you want to really improve performance and not take any chances with a sound stock motor, how about these suggestions:
1) long tube headers
2) Have tmoss port your lower intake
3) Remove air intake silencer and add low restriction filter
4) Put a set of 3.73 or 4.10 gears in the car

Those changes will NOTICEABLY wake up the car, they won't affect drivability, and you won't have to open up the engine.

 

[Sgt.5point0]

I see that you have the TrickFlow Stage 1 cam, I was wondering how you like it? Since that is the same cam I was thinking about getting. And also does anybody think that I should get/need a main stude girlde for the stock bottom end?

I really like the Stage 1, it's not really lopey and has a decent idle but you can tell theres a cam in it. Only thing is that my combo doesn't really come to life until about 3000RPM, but that may be a combination of things, I know the ported Typhoon is to blame for a lot of it though. The nice thing about the Stage 1 is that it's a split duration cam unlike the Ford Racing cams. Also it's not high priced!