timmy201 wrote:
The other ways to lower compression is to have more dish in the pistons or take more metal out of the head.
You'll really struggle to get the CR that low with flat top pistons and a 1098 crank.
http://www.podifold.com/compression.html
You'll really struggle to get the CR that low with flat top pistons and a 1098 crank.
http://www.podifold.com/compression.html
Thanks for the link, makes tinkering with values much easier. You are right though seems I will have to go with dished pistons.
69k1100 wrote:
Run it on alcohol. Plenty of information on boosted e85 engines and high compression.
From what I've read, e85 works best on fuel injected setups with a eFlex sensor. For now, I'm not planning on fuel injected but if funds become available this is a definitely a route I would like to pursue.
deluxe67 wrote:
Why don't you just speak to Graham Russell? His contact details are here somewhere, he will know all the answers and I'm guessing he will have questions for you. Please understand, I'm not being a smartarse, just trying to help...
Totally understand and thanks for the help. I briefly spoke with Graham a few days ago but I would like to hear from other people. "There's more than 1 way to skin a cat" kind of approach
drmini in aust wrote:
No real need for PFTE buttons, as the circlip grooves in Graham's pistons are better than those in Hypatecs.
If you think +.100" is boring out a bit far, Graham has .080" ones also.
If you think +.100" is boring out a bit far, Graham has .080" ones also.
Thanks for the tip, I believe I did first read about the PFTE buttons from a review on Hypatec pistons now that you mention it. I have no experience in the engine overbore area so I'm not sure if +0.100" is too far. The only concern I've heard so far is mostly based on it just being a big number. +0.080" is my fall back plan but would like to hear any experiences you've or anyone has heard of, of a +0.100" small bore.
Morbo28 wrote:
I'm not an expert but I'd also run dished pistons rather than decompression plate. If for nothing else than fewer areas for leaking gasket. And the plates just seem like a patch fix to me. I also wouldn't go too big on the bore to keep a nice thick wall.
e85 or methanol injection would be my choice too. If I used electronic fuel and timing I would have gone e85 plus eflex sensor.
Will blow through be a 1 3/4" like turbo Metro?
e85 or methanol injection would be my choice too. If I used electronic fuel and timing I would have gone e85 plus eflex sensor.
Will blow through be a 1 3/4" like turbo Metro?
I am trying to avoid a decompression plate for that exact reason, leaky head doesn't sound like a good weekend at all. With the blow through set up passing through an inter-cooler, I'm not sure how much further methanol injection will cool the fuel mixture, the cool
factor alone though is tempting. I am planning on using electronic timing by way of a Megjolt and Ford EDIS system to minimise timing issues. When you say electronic fuel do you mean just the electric fuel pump or full fuel injection? The blow through will be using the Hiff 44 1 3/4" carb modified to be turbo friendly just like the the Turbo Metro. From what I've seen it's relatively simple and much easier and cheaper than trying to source an actual Turbo Metro Carb. The plenum will most likely have to be custom made though as the Metro ones are very difficult to find/ overly expensive. Just had a quick browse through you're build thread, awesome work. Will definitely have to put some time aside to read through it thoroughly.
Thanks all for your advice so far
