Bubble's Engine...

[Bubbleguinea]

hey guys! the names bubble over from zcar.com...just joined the site! anywho, ive got a built NA n42/n42 L28...check out the pictures at my site...anyways, ive got the stage 3 camshaft from MSA in there, and i was wondering how this will work out with 8.4:1 compression...someone people over at zcar.com dont think it will run well at all....whats yall opnions?

heres my mods:

Rebuilt N42 Block

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-bored over .020

-matched rings/pistons, oversized

-polished/balanced crank

-polished/balanced rods

-all new bearings

-new rod bolts

- new oil pressure relief valve

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Rebuilt N42 Head

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-all new valves

-new seats/seals

-port matched to intake

-MSA 6into2 header with 2 ½ inch back with no CAT

-MSA stage 3 cam kit

-performance rocker arms

-performance springs

-performance lash pads

-performance Cam, Grind: 17034. Lift(In/Ex): .460/.460. Duration(In/Ex): 270/280

- all new timing components

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Rebuilt Intake

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-60 mm Throttle body

-ported out for TB and port matched to head

-all new injectors

-AAR and hoses removed to clean up

-acid dipped and cleaned

-KandN cold air induction

-turbo AFM

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Rebuilt Suspension

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-MSA front and rear sway bars

-Energy Suspension bushing kit

-Tokico Struts all around

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Rebuilt Brakes

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-Beck Arnley Calipers with performance pads

-Brembo rotors/drums

-stainless steel brake lines

-turbo brake master cylinder

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Rebuilt Drivetrain

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-1983 5 speed

-new transmition mount

-new differential mount

-new clutch/pressure plate/ throwout bearing

-3.54 R200 differential

-stainless steel clutch hose

-redline MT-90 tranny fluid / Mobil 1 diffy fluid

- new clutch master cylinder

- flywheel re-surfaced and machined

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Rebuilt Ignition

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-Crane PS-40 coil

-NGK sparks

-NAPA starter

-Taylor 9mm wires

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Rebuilt Cooling/Oil

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-new fan clutch

-new water pump

-rebuilt radiator

-new thermostat housing and all sensors are new

-turbo oil pump

- Kand N oil filter

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Rebuilt Interior

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-new carpet

-seat rebuild kit

-rebult dash with new lights

-Kenwood sound system with sony and alpine speakers

[PrOxLaMuS©]

Bragger...

good to see you here too man!

PS - link your pics directly to your post... it'll make people smile more

[Ed]

Hey, welcome to the club! Quite the set up you've got. What year is she? Let's see those pictures. The cam is going to be up to you. See how she feels at idle, it will run rougher at idle with a big cam but you'll have great power in the 3K rpm range.

[Gav240z]

Hi I noticed your running dished pistons, you'd probably be better off with the flat tops instead while you have the motor out and almost ready. I'd considering putting flat tops in as obviously you'll get higher compression and more power and it will also help with bottom end torque.

I'm assuming that the STAGE3 camshaft is a rather wild combination as you haven't really stated what specs it is. You can counter the lack of low end torque by setting the cam timing using the cam gear numbers there should be a 1,2,3 and depending how your car is set up you have those options.

From the looks of everything else you've done or been doing it would be a shame to go with dished pistons if you ask me.

Nice work btw looks like your doing things properly .

[59ghia]

With a fat cam you need higher compression to start out with, with that much duration your gonna lose a bunch of it (compression). Unless your going turbo, in which you'll want a different cam profile to begin with.

Dave

P.S. welcome to the site

[Bubbleguinea]

see thats what i was thinking....i really dont want to switch out my pistons...for a couple of reasons...

i did not rebuild my bock, i had a machine shop do it that does Z engines...so they overbored it and installed these pistons, and i paid $1300 for the engine block, so i dont want to switch them out! ill probbaly end up using this cam for a while, then if it really doesnt preform well at all ill go down to stage 2....

im only going to use this car for driving around my town, ya know, downshifting to throw the RPM's up and fly by someone.....some track and autox...

[e_racer1999]

well, since you spent so much on your block, i would recommend just sticking with those pistons. you probably wouldn't want a very aggressive cam in that case..

[Bubbleguinea]

ugh. i really didnt want to have to do this, but i guess i am. i called MSA and they said they would ship me out a stage 2 for no cost, and pick up the stage 3. hows that for customer service?

[Victor Laury]

Andrew, Your photos are up. Looks to me like your doing a first class job. Well, Maybe except for the orange details on the engine, drivetrain and suspension

Don't listen to me, it's a taste thing and it is your car! Good on ya and keep the photos coming.

[Bubbleguinea]

well shes going to be painted le mans sunset orange, so i figured the orange accent colors would look nice!!! thanks for the compliments...

[beandip]

bubble, you started out with a post that was quite intense. This is not zcar we are serious and not a bunch of children . I do welcome you to the club and I hope you find that we are a wealth of information. The low compression is going to cost you HP no doubt , unless you go turbo. As was stated before flat top pistons would have been a better option. You should still enjoy an increase in power. Look to going with flat topped pistons in the future. m 3cts

[Bubbleguinea]

wait, beandip, did i do something wrong? or are you saying my first post was really deep? im confused....was i acting childish? i did a search on here and didnt find any posts about it, thats why i started a thread!

ive made the choice to get a stage2. MSA said they would exchange it for me! a guy from zcar.com is going to come over and help me take out the cam..im not to apt to doing it myself!