What turbo? Any of the bolt on kits are far out of their efficiency range at those boost levels.

And what mods to support this?

 

S362

18:1, Studded, turbo cam, db4, sticks, intercooled

 

Rockin setup dude, I'd like to see that old IDI

But back to the topic from earlier..... okay seriously, WTF guys? I try to say to make serious power on an IDI, you have to lower the compression. At least three people tell me that the compression is not an issue at all, but here is a guy that is obviously making some major power out an IDI, and yes, his compression is lowered to 18:1.

I'm not trying to say the IDI's can't take abuse, I'm just saying you need the supporting mods to accompany it.

Edit: To anyone else who reads this thread, to help make sense of this, two of the people deleted all their posts in this thread. This post was a reply to those who posted but then deleted them.

 

Actually, the main thing you need to run any real level of boost, aside from better turbo's, is a new camshaft. The stock camshaft has a really narrow LSA which contaminates the combustion chambers, and increases cylinder pressures under boost. (see articles on reversion)

I would say with the turbo cam, and a supporting turbo and other mods... stock compression should be able to handle 20-25psi for full life of an engine.

Lowering the compression without a cam swap is just bandaging an issue.

I'm running 18:1 and as said previously, truck see's 30+psi daily on fuel only. 40+psi on 50/50 water meth mix.

Here is a picture of my engine:

 

Just because he chose to lower his compression doesn't mean he needed to!

 

To run the boost I run, yes I needed to.

22:1 wouldn't live long @ the boost I run.