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stock rods boost?

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mad dog tannen

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Discussion starter · #1 ·
how much boost/power can stock rods take?

A friend of mine said that I could upgrade my pistons and run around 18lbs of boost safely.
Are the stock crank and rods strong enough to take it?
What do you guys think?

By the way i did search for an answer in other threads but could not find one.
:dunno:
 
#2 ·
IBT:lock:

A search could have easily found this. But i'll answer your question with another question. If you're gonna take it apart enough to put pistons on the stock rods why not sneak some big rods in there, so you dont have to worry about grenading your motor. :tat:

Some have made 400 Hp, a few boost spikes on the dyno have resulted in over 600 hp on the stock block. While others cant even make 300 hp with out a rod kissing the block. This subject has been milled over MANY times.
 
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Discussion starter · #5 ·
I just got the engine out today. It is completely ruined so I am looking for another block (has about five holes in the side if it, one of which has a rod hanging out of it).

Right now it has a 16g turbo and bov, that's all.

I bought the car for its flawless body and interior.

I plan on running at least forged pistons, ARP studs. get a valve job (depending on the engine i find), and a port and polish. And of cousre all new bearings, seals and machining. If i have to replace rods or what have you I will upgrade but I don't want to beef it up for 700hp when i'm only looking for 3-400.
 
#9 ·
cAPSlOCK97gst said:
You will be able to run a lot more than that on stock internals IF you have a good tune.

What are your specific mods?
Click to expand...

Exactly! But it still leaves very little margin of error, whether it be a simple oversight on your part or not. Trying to push so much out of a stock internals, all it could take is a crappy tank of gas to send a rod through the side of the block.

That's exactly the reason most of us overbuild. In general, if you want 500HP, you build for 600HP just to have that nice cushion for error.

There are also those that push things to the limit just to see how far it can be taken, which it sounds like you're that type, so I would say go for it and see how far it can take you. Just make sure your tune is spot on, and you should be fine.
 
#11 ·
If you're only looking to make 3-400hp, the stock 1g rods should be plenty. They're considered to have a safe working load of about 500hp. Again, tune dependent.
 
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#12 ·
gdmbat85 said:
If you're only looking to make 3-400hp, the stock 1g rods should be plenty. They're considered to have a safe working load of about 500hp. Again, tune dependent.
Click to expand...
Wouldn't you agree that torque, rather than horsepower, is the primary limiter (breaking force) of internals, especially rods?
 
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#17 ·
What are your goals?

I am not even sure there is a reason to replace any of your internals?

As long as you have it apart I see no real reason not to build it anyways. There is ALOT of info on this board on how to build a motor.
 
Discussion starter · #19 ·
4g64fiero said:
What are your goals?
Click to expand...
My goals are to have an engine that reliably makes 3-400 hp, can be driven daily, and will last 100,000+ miles. I may race it every once in a while for fun but this is going to primarily be a street car.

The body and interior look like it just rolled out of the show room.

If i really want to race i'll get myself a little beater and go rally racing!
 
Discussion starter · #20 ·
4g64fiero said:
As long as you have it apart I see no real reason not to build it anyways. There is ALOT of info on this board on how to build a motor.
Click to expand...
I agree.

If i have to rebuild it I am going to do it right. These Mitsu engines ain't like taking my old beetle engine out. I don't want to have to take it out again for a long time.
 
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mad dog tannen
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