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Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 03-03-2005, 07:55 PM   #171
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Quote:
Originally Posted by jachin
Would it be a good idea to replace because you already have it apart and your car has over 100k on it?
There'* a term for this, its called "project creep" its what took my $3000 rebuild to over $12,000.

There'* always going to be something you 'should' or 'better' replace 'while I'm in here'. Of course I'm going to say yes, surely you should replace most of whats in there at over 100k mi. You "should" replace your lifters, retainers, valve locks, timing chain and tensioner, and maybe your cam and crank sensor 'since you already have it apart.' Although most of that I wouldn't put on the top of my list.

Sorry for the extensive use of quotes, just worked out that way

Seriously, to answer the question (the best I can). Obviously since you're modding it you plan on keeping it for a while. At some point in the engines life you're going to need to replace it (project creep?) so...sure, if you can easily afford it now or really don't want to do it later. Then again some would say 'if it ain't broke, don't fix it.'
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Old 03-06-2005, 02:03 AM   #172
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those lucky bastards in australia can probly install those rockers in like 20 minutes with both valve covers having easy access, im on the 3rd hour trying to take off my rear valve cover!!! ::vent over:: now I feel much better!
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Old 03-06-2005, 04:20 AM   #173
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Wow, it took me like an hour to do it all and I was taking my time. The rear cover isn't too bad, unhook your power steering reservoir from its base and just shove it out of the way, don't even need to disconnect the hose. Just pull up on the back end and slide it down, should unhook. Might benefit from disconnecting your fuel lines, although I didn't need to. After that it should be pretty easy, just takes a little work to get the cover off after you've unbolted it.

Good luck!
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Old 03-07-2005, 11:10 PM   #174
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I'm pulling mine , but I've got other things going on at the same time..

First off the springs...wow...$60 for the whole set. Nearly 50% off comparable sets. That aside...

This is a long post, but there'* plenty of info...

Ok, found out some info on the cams and I really want to open this up for discussion. The lifts shown are at stock 1.6 so its a what you see is what you get deal, other than those with 1.72 rockers.

So I looked further to see where the performance came from and believe its the duration and valve timing. I did some research and rapped all the info into Dyno2003 which many people stand by its accuracy. The only issue I'm having is with a few numbers for the supercharger input so don't take this as a "what you'll get" but more of a comparison from one cam to another using an identical base. Here'* what I've come up with:


Intense Stage 3 blower cam:

Base:

Cylinder heads: Wedge/Stock ports and valves
Intake Valve DIA: 1.710
Exhaust Valve DIA: 1.490
CR: 8.5:1
Induciton flow: 460cfm @ 1.50 inHg
Roots blower 2.2" pulley
Island flow: 60cfm
Peak Efficiency: 50%
Boost limit: 10.4psi
Belt ratio: 3.13

Camshaft:
Intake lift @ valve: .541" (Using stock 1.6 ratio)
Exhaust lift @ valve: .554" (Using stock 1.6 ratio)
Lifter Acceleration Rate: 3.20
#'* at 0.050" lift
Intake valve open: 0.0*
Intake valve closed: 42*
Exhaust valve open: 53*
Exhaust valve closed: -5*
Valve Overlap: -5.0*
Intake Duration: 222*
Exhaust Duration: 228*

Results: [email protected] 300#@3500rpm


-----------------------

'63 Cam:

Base: Same as above

Camshaft:

Intake lift @ valve: .472" (Using stock 1.6 ratio)
Exhaust lift @ valve: .472 (Using stock 1.6 ratio)
Lifter Acceleration Rate: 3.20
#'* at Seat to Seat
Intake valve open: 25.0*
Intake valve closed: 65*
Exhaust valve open: 72*
Exhaust valve closed: 24*
Valve Overlap: 49*
Intake Duration: 270*
Exhaust Duration: 276*


Results: [email protected] 299#@4000rpm

-------------------------

Again, this isn't to show you how much power you'll get because surely some of the supercharger #'* are off (Not much info on the m62 out there!). But I wanted to give a visual example of how duration, overlap, and valve timing can make up for lifts short commings.

So...whats the group thoughts? Good cams or should we look elsewhere?
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Old 03-08-2005, 12:07 AM   #175
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Good cam, im in. Like i said ill be gone from tomorow morning until friday night, ill think about the springs between now and then, depending on how much money i have when i get back.
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Old 03-08-2005, 02:21 PM   #176
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Default Springs..

DJ.........

Put me down for the Springs......

Just let me know when you need to send the $$$$

Sal
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Old 03-08-2005, 04:50 PM   #177
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Default Re: Springs..

Quote:
Originally Posted by jachin
Good cam, im in. Like i said ill be gone from tomorow morning until friday night, ill think about the springs between now and then, depending on how much money i have when i get back.
Sounds good.


Quote:
Originally Posted by salmanman
DJ.........

Put me down for the Springs......

Just let me know when you need to send the $$$$

Sal
Looks like we're on hold until this weekend. I'll get you all the info then
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Old 03-13-2005, 11:55 PM   #178
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Ok it looks like ill just be getting the cam for now, ill get springs with rockers. Those numbers are with the cam a 2.2 pulley and an exhaust and air intake right? so with rockers ill be getting somewhere in the neighborhood of 290 correct. Would hotter coils help me out any after all of this and maybe an msd ignition box?
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Old 03-14-2005, 01:54 AM   #179
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Quote:
Originally Posted by jachin
Ok it looks like ill just be getting the cam for now, ill get springs with rockers.
Sounds good, but I can't guarantee the price whenever that is.

Those numbers are with the cam a 2.2 pulley and an exhaust and air intake right?
Yeah, but don't count on their accuracy. I saw earlier today they used the exact same program as they were building an engine. Engine came out ~3hp over the estimate. Not bad. But I'm not 100% confident on some of the setup numbers of the supercharger

so with rockers ill be getting somewhere in the neighborhood of 290 correct.
Its difficult to say, and it depends a lot on supporting mods.

Would hotter coils help me out any after all of this and maybe an msd ignition box?
I'm not a huge fan of upgraded coils, I got mine as more of a replacement. An MSD box is always a nice upgrade though.
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Old 03-17-2005, 12:31 AM   #180
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Read the first page....
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