|
|
|
|
Joined: Oct 2003
Posts: 718
Veteran CEG\'er
|
Veteran CEG\'er
Joined: Oct 2003
Posts: 718 |
Originally posted by SAV:
Are you asking about the 8,000 RPM "revability" just so you can build a FI car that gives you that bragging right? I'm asking honestly, because there's got to be more useful parts of the Duratec powerband than way up there at Honda speeds.
I can't imagine having all the useable power way up there on the band if this is a car you're going to be driving every day. I'm not so sure raising the powerband will eliminate the traction issues either.
But I'm not very tech-savvy, so if you have a plan forming, then work with it.
-SAV
raising the powerband will definitely not help traction issues...ask any turbo Honda guy he'll tell you he has plenty of traction issues. I have driven two turbo Honda's that have major traction issues all the way into 3rd!
1999 Cougar V6 MTX
SVT UIM/LIM/65mm TB, I/H/E, Fidanza/SPEC III/Torsen, Koni/GC's, 19" Icon wheels w/ Pirelli rubber, NX Wet Kit
|
|
|
|
|
Joined: Dec 2004
Posts: 1,190
Hard-core CEG\'er
|
|
Hard-core CEG\'er
Joined: Dec 2004
Posts: 1,190 |
Originally posted by Stazi:
Somehow I don't think the synchros will like 8000rpm shifts for a very long time! And 8000romon a FI setup is going to be pushing the ragged edge for piston speed/rod stretch. I wouldn't go there! 
Even with My pauter rods and diamond pistons?
PLEASE HELP ME GET MY CAR TOGETHER! ITS IN DAYTON OHIO! I need the motor together and in the car so i can DRIVE it! Pleeeeeese!
diamond pistons for 3.0/forsale
#702 of 2150
|
|
|
|
|
Joined: Aug 2001
Posts: 5,810
Hard-core CEG'er
|
|
Hard-core CEG'er
Joined: Aug 2001
Posts: 5,810 |
Originally posted by Stazi:
Somehow I don't think the synchros will like 8000rpm shifts for a very long time! And 8000romon a FI setup is going to be pushing the ragged edge for piston speed/rod stretch. I wouldn't go there!
Ditto!!!!
My thoughts exactly.
Even if the forged rods and pistons are good, you still have to wonder about the stock valve springs, lifters and retainers. I'm not saying they need to be changed but then when you are running rpms 25% to 30% higher than the factory designed redline, you may need to consider them.
Former owner of '99 CSVT - Silver #222/2760
356/334 wHP/TQ at 10psi on pump gas!
See My Mods
'05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red
'06 Mazda5 Touring, 5spd,MTX, Black
|
|
|
|
|
Joined: Dec 2004
Posts: 1,190
Hard-core CEG\'er
|
|
Hard-core CEG\'er
Joined: Dec 2004
Posts: 1,190 |
Ok i under stand...I just was not sure. I will probly use a 7300 rpm shift point.
PLEASE HELP ME GET MY CAR TOGETHER! ITS IN DAYTON OHIO! I need the motor together and in the car so i can DRIVE it! Pleeeeeese!
diamond pistons for 3.0/forsale
#702 of 2150
|
|
|
|
|
Joined: Aug 2003
Posts: 4,140
Hard-core CEG\'er
|
|
Hard-core CEG\'er
Joined: Aug 2003
Posts: 4,140 |
the problem is that stresses on components like valves and pistons are related to the rpm squared. The accelerated wear on bearings is linear, or close to it if you don't have oil issues. This is why engines have trouble getting into the higher rpms. 10k is about the limit for steel parts. In a lower-powered, super light engine like a crotch rocket, you can bump that up a little, but in a car like ours you would need to upgrade every reciprocating part to be about as good as you can get (light and strong - low weight minimizes the force as well) with steel before running 8k or more.
|
|
|
|
|
Joined: May 2003
Posts: 347
CEG\'er
|
|
CEG\'er
Joined: May 2003
Posts: 347 |
I think you will get valve float somewhere over 8k? The valve lashes on our cars can only take so much rpm before they go useless. But I know there are not many guys on here who are hitting that kinda rpm. 
1996 Mondeo 24v 4-door
twin janspeed stainless pipe
cat by-pass
Phase 2 RS bodykit
16" cosworth alloys
K&N RU3530
SVT TB/UIM/LIM
poly bushings
konis/bat springs/bar
Pioneer
MSDS
Indiglos
P&P heads
2005 Mondeo Zetec Tdci
|
|
|
|
|
Joined: Apr 2004
Posts: 1,194
Hard-core CEG\'er
|
|
Hard-core CEG\'er
Joined: Apr 2004
Posts: 1,194 |
I hope the Duratec can handle the redline being set at ~7200 because that's where I am putting it when I get a dyno tune.
|
|
|
|
|
|
|
