Hey S2ki crew!

I am looking to purchase a used S2000 that was supercharged and has a bad block. No problem because I am looking to K swap it. With that being said, I do want to gauge the value of some used parts that come with the car.

I know its all based on condition, etc too so please try to do your best.

1. Block is an f22c from a 2005. Had low compression in #3. What's it worth how it sits vs. if I got it machined?
2. Set of heads with 100k miles on them
3. Haltech Platinum Pro ECU
4. Science of speed S/c kit with paxton novi 1000 (in decent condition, removing working according to owner)

Trying to figure out how much I can get from these or if they even hold value anymore so that I can adjust what I pay based on that.

Thanks all,
Z

 

Find out why the block has low compression

Don't get it machined. Because chances are high that you've have made a paperweight if you do.

If the compression loss is from the head and not the bottom end...slap one of the good heads on it, using genuine Honda parts and following the FSM to the letter, as if its your first time working on a car. Now its worth $4-5K.

Also don't machine the heads or use ANY aftermarket parts. Any of that will also be towards making a paperweight.

If you're in the paperweight business, however....this could be good.

 

That was a pretty funny reply . You never know if someone is a paperweight enthusiast or not LOL. Unfortunately I am not a paperweight enthusiast. I would like to know the possibilities. The motor was supercharged and somehow he found out there was low compression in cyl 3. That could be attributed to the head because of the valves? I know it could definitely be attributed to the cylinder itself and a number of issues there. I guess the best thing I could do is pop the new head on and see if the compression is better? If not, then it would be the block itself. Would it be worth getting that fixed? If so, what would you do to get it fixed correctly before selling it to someone?

 

So the low compression motor has been taken apart, I take it? As in...the head is off the block?

If so...

First step is just to visually inspect the bores. Run the motor by hand and check all the bores through the entire stroke.

Its *rare* to see sizeable compression loss through the bottom end. So the bores are probably fine. If there's an oval bore or a scuffed bore...you'll be able to see it. These are FRM sleeved engines...so...don't look at them through cast iron sleeve lenses.

Typically, compression issues are due to burned or bent valves.

But you might see scratches in the bore - this is common, especially on FI setups. The FSM states that scratches are an issue if you can feel them with your fingernail AND they cover the length of the stroke. So...pretty forgiving definition of "issue". They use a forgiving definition probably because servicing the bore is probably not something you want to do. It has a lot of limitations and also limited success.

The next step is to put an assembled head on and do a leakdown test. Find out where the compression is going.

Third step is a compression test. A leakdown test is only testing the compression at TDC. A compression test tells you if you've got blowby or another issue somewhere else in the stroke.

Once you know the issue, you can determine the proposed fix. We can help you with that.

 

Getting the car today! Ill let you guys know - thanks for the help B serious!

 

Okay here it is! Would you just sell the block as is looking at it? I don't want to put a whole lot of work into it. I have a set of brand new heads that it came with as well but I don't want to ruin those (would rather sell) and the mating surface isn't clean as you can tell. Also, not sure if water got into the block either.

 

Apparently I need better quality photos, and more photos - coming soon!

 

Did you hire a sketch artist for that image?