1.9 rockers question
#1
Senior Member
Certified GM nut
Thread Starter
Join Date: Dec 2002
Location: plattsburgh NY
Posts: 2,037
Likes: 0
Received 0 Likes
on
0 Posts
1.9 rockers question
Read this in another forum does it sound like a fact or opinion " Why would you ever want 1.9'* on the L36? The 1.8'* will produce better gains (not my research, Wizband posted this quite some time ago), and he'll be able to keep his stock springs and retainers. There is NO reason to go with 1.9'* on a L36 that is going to stay naturally aspirated."
#2
Senior Member
True Car Nut
Join Date: Feb 2004
Location: Pennsylvania
Posts: 5,177
Likes: 0
Received 0 Likes
on
0 Posts
sounds like opinion unless you or this dude can show more evidence of his research. The further you go down in rocker ratios, dont you need more supporting mods to actually make them work?
#4
Senior Member
True Car Nut
Join Date: Sep 2004
Location: Farmington, Minnesota =MWBF '05 SURVIVOR= =CEBF '06 SURVIVOR= =August '06 COTM=
Posts: 9,130
Likes: 0
Received 0 Likes
on
0 Posts
I think the 1.7'* are about the right size....but I've also heard you don't get as much power out of them worth the cost of them? I think that'* what BonneMnMe (Jason) said?
#6
Senior Member
Certified GM nut
Thread Starter
Join Date: Dec 2002
Location: plattsburgh NY
Posts: 2,037
Likes: 0
Received 0 Likes
on
0 Posts
http://www.3800performance.com/Merch...roduct_Count=1 How do these compare to intense gen 3. Also with these do you need to upgrade springs, ect?
#7
Senior Member
True Car Nut
Join Date: May 2003
Location: Holt, MI & Lima, OH
Posts: 3,022
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by TJ'sblackbonne
http://www.3800performance.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=IWIN-RA&Category_Code=CVT&Product_Count=1 How do these compare to intense gen 3. Also with these do you need to upgrade springs, ect?
Those are the rockers arms we have had in the SSEi since ~70k miles, it now has 135k on it and runs great. (it also has completely stock valvetrain otherwise, stock pushrods, springs, valve seals, but like I said, I don't recommend it) They gave a very noticable gain, and killed all the KR the car had (close to 8 degrees) at the time. They provide almost the same gain as the Intense rockers, the only difference is they aren't roller tip like the Intense ones, and they are possibly heavier??? (don't remember off the top of my head). The horsepower gain would be very marginal between them, maybe a couple horsepower. My dad ran the ZZP 1.91 rockers in his GTP and was the fastest stock cam GTP in the 1/4 mile and highest horsepower GTP until he pulled them out for the cam (his record still stands at this time), and the ZZP rockers were made by the same company that is producing the I-win rockers and obviously both were modified stock rockers so they were pretty much the exact same rockers. Personally, I'd get whichever one is cheaper (don't know or really care what the prices are so maybe the price is close/the same) unless the Intense ones are within like $10-15, if so I'd go with the Intense rockers.
Shawn
#9
Senior Member
Posts like a Turbo
Join Date: Aug 2002
Location: Funky Town, Texas
Posts: 333
Likes: 0
Received 0 Likes
on
0 Posts
After adding ZZP'* SR rockers, my car gained three to four tenths in the quarter mile. These I think are 1.8.1 on the intake side and 1.85 on the exhaust side. Power is good, but untill I opened up the exhaust fron 2.25 to 2.50; then you may not feel it. The engine we must remember is a giant air pump.
#10
Senior Member
True Car Nut
Join Date: Jul 2003
Location: Westerville, Ohio 2000 Black SSEi
Posts: 6,127
Likes: 0
Received 1 Like
on
1 Post
INTENSE'* rockers are made by the best rocker manufacturer in the world, Harland Sharp. Lightweight, and rollertipped you can expect 30 horsepower at the crank with 1.9'* as well as faster reving. The gains of any higher ratio rocker will be on the upper end of the rpm band. For this reason you will want an aftermarket PCM that raises shift points. Rockers on a stock PCM'd car are not worth it in my opinion.