PDA

View Full Version : How does R&D achieve a 2.0 liter

LennyP
10-18-2006, 03:58 PM
R&D has 2.0 liter shortblocks for sale for $5k. I was wondering what they do to achieve such a large displacement.
http://www.rddyno.com/product_info.php?cPath=32_91&products_id=1109
Dweezil
10-18-2006, 04:17 PM
Lots of bore, welded and offset ground crank, I'm going to guess either a deck plate to raise the deck height or really short rods to make up for the stroke.
wazup
10-18-2006, 04:29 PM
i emailed them a long time ago about the specs on their stroked D-series motors. they emailed me back saying they used a 78 or 79mm bore and a 100 or 101mm stroke.. pretty insane.. i forgot what the rod to stoke ratios were, but not too streetable
Dweezil
10-18-2006, 04:32 PM
Not to anything would be my guess.
LennyP
10-18-2006, 04:52 PM
What is the biggest you can go without using a larger crank or deck plating?
NEP-tuningalltheway
10-18-2006, 04:54 PM
thats insane price, might as well just piece together a ls/vtec
Dweezil
10-18-2006, 05:12 PM
What is the biggest you can go without using a larger crank or deck plating?

D17, Pretty straight forward. Honda's already done it.
LennyP
10-18-2006, 05:23 PM
I meant what is the largest you can make a d16.
LennyP
10-18-2006, 05:24 PM
thats insane price, might as well just piece together a ls/vtec
I wasn't actually thinking about buying it. I was just wondering what was done to find out how much it would cost to do the same.
Dweezil
10-18-2006, 05:35 PM
Are you talking about useing a D16 crank? In that case I believe it's still about 1.7 liters with sleeves. If you use a D17 crank with a 79mm bore you get 1.851 liters.
LennyP
10-18-2006, 05:45 PM
How long can you go with the rods and still have enough piston?
NEP-tuningalltheway
10-18-2006, 05:48 PM
How long can you go with the rods and still have enough piston?

got to worry about the pistons poping out of the block...
Dweezil
10-18-2006, 05:51 PM
You'd have to ask whoever makes your pistons. Assumeing a Flat top piston with a 24.7mm compression height you could stuff a 140mm rod in to get a R/S ratio of ~1.48:1
pearl62
10-18-2006, 05:52 PM
It'd be an awesome supercharger setup!
marcin
10-18-2006, 06:19 PM
that combo would need a LOT of head to work properly. I dont know that you could get there with even oversized valves, square ports, etc. thats the limitation with our motors. the grocery getter head

m.
Dweezil
10-18-2006, 06:21 PM
Mad headwork and a big cam just to make a good street motor.
DOHCDX
10-18-2006, 07:24 PM
it's totally pointless at that cost