New AMS Engine 23RR Engine = Big Power!
#91
Evolved Member
Join Date: Feb 2006
Location: Seattle
Posts: 1,123
Likes: 0
Received 0 Likes
on
0 Posts
True or false?
from my experience higher compression doesnt quicken spool, but it makes more power vs same lower compression setup , and helps with off boost throttle response.
from my experience higher compression doesnt quicken spool, but it makes more power vs same lower compression setup , and helps with off boost throttle response.
#97
Former Sponsor
Thread Starter
iTrader: (3)
Join Date: Mar 2003
Location: Arlington Heights, IL
Posts: 793
Likes: 0
Received 0 Likes
on
0 Posts
I finally got solid quotes on a the custom parts and there will be a 8-12 week lead time.
We are using some trick stuff and this will be a very bad *** motor.
One of the major factors affecting RPM limits are the rod bolts. They are stressed the most on the exhaust stroke when the piston is nearing TDC. The rod bolts have to keep the rod & cap together. We are taking our motor one step beyond and using some high grade hardware for the rods.
Most aftermarket rods use ARP 2000 material which is a good material. A step up is the L19 or H11 tool steels. They have a higher tensile strength but have to handled carefully because they corrode easier and can fail due to corrosion induced fatigue failure.
I'm choosing a new super-alloy called Custom Age 625+ which has the highest tensile strength of the materials and is immune to hydrogen embrittlement and corrosion.
We should have solid pricing this week on the 23RR engine.
We are using some trick stuff and this will be a very bad *** motor.
One of the major factors affecting RPM limits are the rod bolts. They are stressed the most on the exhaust stroke when the piston is nearing TDC. The rod bolts have to keep the rod & cap together. We are taking our motor one step beyond and using some high grade hardware for the rods.
Most aftermarket rods use ARP 2000 material which is a good material. A step up is the L19 or H11 tool steels. They have a higher tensile strength but have to handled carefully because they corrode easier and can fail due to corrosion induced fatigue failure.
I'm choosing a new super-alloy called Custom Age 625+ which has the highest tensile strength of the materials and is immune to hydrogen embrittlement and corrosion.
We should have solid pricing this week on the 23RR engine.
#99
Former Sponsor
Thread Starter
iTrader: (3)
Join Date: Mar 2003
Location: Arlington Heights, IL
Posts: 793
Likes: 0
Received 0 Likes
on
0 Posts
Now that I think of it I did build a few higher compression engine with no other major changes. We did a 2.0L with a big turbo and high compression and it made more power under the curve down low than the same setup as a low (8:1) compression engine. Now is it because of the increased torque from the compression or because of actually quicker spool. It would be an interesting test to hold two engine of different compressions at a steady state RPM on the dyno and do a boost response test.
#104
EvoM Guru
iTrader: (6)
We did a 2.0L with a big turbo and high compression and it made more power under the curve down low than the same setup as a low (8:1) compression engine. Now is it because of the increased torque from the compression or because of actually quicker spool. It would be an interesting test to hold two engine of different compressions at a steady state RPM on the dyno and do a boost response test.
Just a WAG . . .