1972RedNeck
New member
- Joined
- Sep 21, 2014
- Messages
- 93
What does the number of valves have to do with timing?
Chris
Nothing - but piston bowl shape may, but I don't know.
What does the number of valves have to do with timing?
Chris
What does the number of valves have to do with timing?
Chris
The location of the injector to the bowl.
If you want economy, an 03-04CR with airflow mods will be pretty hard to beat...but, that's not what he wants. He wants to ask a question then tell everyone why they are wrong.
Chris
Well, that got out of hand.
I tried to outline what I am going to do and then asked for advise on a couple points. Instead I am told I need to do X to get Y where Y is simply 400 HP. Yes, I realize I can get a good running take out 12V and make 400 HP. Yes, I realize that electronic tuning can trump simple old mechanical pumps. But I don't think that's what I asked.
I am going to do as I think I have done a decent job outlining. I could use advise on compression ratio as well as 24V vs 12V head from an efficiency standpoint and how the outlined compression ratios would work with each head. That, and a recommendation on camshafts would be great as well.
I'm sorry that I was not clear in my previous posts.
24v head for better flow with a 24v piston I’d say 18:1 is as high as I would go or ring land damage will occur set timing around 21 22ish for decent manners and good fuel economy with a Hamilton towing cam 182 208 would be all you need.
Sounds like solid advice.
So to get there on compression ratio, I should start with a set of HO 24V pistons, correct? I think they are the 17.3:1 stock, aren't they? Or is there a set of pistons for a different 24V application that would get me closer without as much block work?
I think 04.5 to 07 24v pistons would be the highest stock compression but I’m currently traveling so my books are not in front of me. HO VP44 I believe are only 16.5:1
I’d say 18:1 is as high as I would go or ring land damage will occur.
I don't see how you came to this conclusion, but this certainly would not be the case.
Then go right ahead and correct me with a better answer ?