250 WHP Supernatural 3.4 Build (Page 34/47)
lou_dias JUL 23, 10:09 AM

quote
Originally posted by La fiera:

Finally took my car out yesterday for the first time with the E85 upgrade.
It feels much different than before, more explosive on the gas, revs faster, winds out
through the gears much faster and the cam comes in with such a punch that now
the clutch can't hold. Even in 4th while cruising when I give it more gas and the RPMs
start to climb and when the cam hits the clutch slips. Still have tuning to do.


Yes it's amazing isn't it? It also helped my 4.9 run NOT-PIG-RICH!
ericjon262 JUL 24, 04:34 PM

quote
Originally posted by lou_dias:

The key thing is they are narrowed at the stem at the bottom. Narrowed to the same diameter as stock 3X00 v6/60 valves. Personally, I will narrow my next set of valves even further.



I've seen several tests of reduced stems, they really don't help as much as you seem to think, and they weaken the valve. I'd rather sacrifice 1-2 hp and have a stronger valve, breaking a disk off the stem makes for a bad day.

A better option would be to press in new guides with a smaller stem diameter. you'll pick up more flow than reduced stems, they have less friction because the stem contact area is smaller, and reduced mass. win all the way around.

FWIW, I've never seen a true hardcore race engine(built by a team) run reduced stems.

------------------
"I am not what you so glibly call to be a civilized man. I have broken with society for reasons which I alone am able to appreciate. I am therefore not subject to it's stupid laws, and I ask you to never allude to them in my presence again."

"The day I tried to live, I stole a thousand beggars' change and gave it to the rich."
http://www.fiero.nl/forum/Forum2/HTML/119122.html

ericjon262 JUL 24, 04:36 PM
E85 has a slower burn rate compared to gasoline, you'll want to advance your total timing a little more to make the most of it.

------------------
"I am not what you so glibly call to be a civilized man. I have broken with society for reasons which I alone am able to appreciate. I am therefore not subject to it's stupid laws, and I ask you to never allude to them in my presence again."

"The day I tried to live, I stole a thousand beggars' change and gave it to the rich."
http://www.fiero.nl/forum/Forum2/HTML/119122.html

lou_dias JUL 24, 07:27 PM

quote
Originally posted by ericjon262:
E85 has a slower burn rate compared to gasoline, you'll want to advance your total timing a little more to make the most of it.


I did. And it likes the higher compression ratio. I picked up 10 or so rwhp switching to it.
La fiera JUL 29, 11:00 PM

E85 has its own rules and it let me know my distributor ignition system was very weak so i started to ugrade. Big thanks to Blacktreee for his
help, i'm new to DIS.
300WHP here we come1

[This message has been edited by La fiera (edited 07-29-2019).]

pmbrunelle JUL 29, 11:43 PM
How small of a spark plug gap did you try with the distributor setup before giving up on it?
La fiera JUL 30, 08:46 AM

quote
Originally posted by pmbrunelle:

How small of a spark plug gap did you try with the distributor setup before giving up on it?



I didn't try different gaps because I had my mind set on switching to DIS already.
Will JUL 30, 11:51 AM

quote
Originally posted by La fiera:


E85 has its own rules and it let me know my distributor ignition system was very weak so i started to ugrade. Big thanks to Blacktreee for his
help, i'm new to DIS.
300WHP here we come1




How close is the brick to your exhaust? It may not like that
ericjon262 JUL 30, 01:16 PM

quote
Originally posted by Will:


How close is the brick to your exhaust? It may not like that



the header wrap probably helps, that being said, I wouldn't want my ICM anywhere near the exhaust, wrapped or not.
La fiera JUL 30, 09:24 PM
That picture is deceiving. I strategically placed the ICM at this location because the heat will dissipate upwards not sideways.
Heat goes up right Will!? Specially if I use half of the deck lid. That means all the heat is sucked from under the car upwards behind the
reat window. And since I don't have anything boiling under the ICM I should be ok.