280ZX (S130) Forums Dedicated to 79-83 ZCars

Cams, Pistons, Injectors and everything else.

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Old Apr 2, 2012 | 08:41 PM
  #26  
NismoPick's Avatar
The Good Twin
 
Joined: Aug 2005
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From: Wild Wild West, UTAH!
Out of balance?

It's common practice to line bore or hone the caps and block and use oversized bearings. I'd go to a different machine shop.

http://elmersengines.com/pages/Machine_Shop_Service

Old Apr 2, 2012 | 09:48 PM
  #27  
WanganDevilZ's Avatar
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The Emblem Thief y0!
 
Joined: Aug 2009
Posts: 948
From: Tulsa, Ok
Originally Posted by NismoPick
Out of balance?

It's common practice to line bore or hone the caps and block and use oversized bearings. I'd go to a different machine shop.
The connecting rods boyo, the main caps are smooth and will accept their old crankshaft friend nicely.

I guess I could just get new rods, but, I'd rather use these, as they seem okay, that lip just needs to be fixed... I damn myself for throwing away the scratched pistons, as only the piston was broke'd, not the rod.
Old Apr 2, 2012 | 09:52 PM
  #28  
NismoPick's Avatar
The Good Twin
 
Joined: Aug 2005
Posts: 20,639
From: Wild Wild West, UTAH!
woops... reeden 2 fazt.

They can still bore the rods and balance once attached to the pistons. I had that done on my first engine build (plus magnafluxed the rods).
Old Apr 9, 2012 | 04:40 PM
  #29  
WanganDevilZ's Avatar
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The Emblem Thief y0!
 
Joined: Aug 2009
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From: Tulsa, Ok
Originally Posted by NismoPick
The stock L28ET cam is far from limiting.
I have two L28ET cams, right now, neither of them are exactly... "Worthy" of placing back into a brand new motor, new valvetrain etc.

Which cam would be best, or say like, a stage I upgrade..? I'll probably stick with the stock turbo for a little bit, but eventually get into a Holset HX35

So, which cam is suggested?
Old Apr 9, 2012 | 11:01 PM
  #30  
NismoPick's Avatar
The Good Twin
 
Joined: Aug 2005
Posts: 20,639
From: Wild Wild West, UTAH!
Are the lobes worn? Scratched?

Whenever I build a motor, modified or stock, I make sure it runs right before I dive into the odds and ends of "modified parts". It's a whole lot easier diagnosing problems when everything is stock, rather than tons of aftermarket / performance parts that make you guess what's wrong. I suggest using the stock turbo cam unless the lobes are damaged, get the motor running correctly, and then change out the cam if you want (I have a write-up in the Gen-Tech on how to change the cam with motor in car). Just "IMHO"
Old Apr 10, 2012 | 05:41 PM
  #31  
WanganDevilZ's Avatar
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The Emblem Thief y0!
 
Joined: Aug 2009
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From: Tulsa, Ok
Originally Posted by NismoPick
Are the lobes worn? Scratched?

Whenever I build a motor, modified or stock, I make sure it runs right before I dive into the odds and ends of "modified parts". It's a whole lot easier diagnosing problems when everything is stock, rather than tons of aftermarket / performance parts that make you guess what's wrong. I suggest using the stock turbo cam unless the lobes are damaged, get the motor running correctly, and then change out the cam if you want (I have a write-up in the Gen-Tech on how to change the cam with motor in car). Just "IMHO"
I'll double check any damage on the cams, they just look like crap, when I take the pistons in to get them attached to the conrods I'll have them see if they be messed up
Old Apr 20, 2012 | 02:59 AM
  #32  
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Joined: Apr 2012
Posts: 16
From: Australia
Originally Posted by NismoPick
Not to rehash the past, but we've discussed the "L28ET vs VG30ET" before:

L motor build questions - ZDriver.com



I don't get why people keep talking about the VG30ET over the L28ET... it's a pointless swap into an S30 / S130 unless you are doing it just to say you did it.

Blah blah blah... I won't argue a brick wall.
I was grave digging this thread, and found this on another forum.

VG: Better combustion chamber design, less prone to detonation (but not the best, by far), better response to mods, a bit harder to work on, uses timing belt.

L: Timing chain, sounds cooler, bolt on mods are more available.

I thought it was funny.
Old Apr 20, 2012 | 02:18 PM
  #33  
WanganDevilZ's Avatar
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The Emblem Thief y0!
 
Joined: Aug 2009
Posts: 948
From: Tulsa, Ok
To those of you who aren't friends with me on facebook, I got my pistons attached to the refurbished connecting rods I got a hold of last week.

Got paid today, money in the bank, soon, main bearings!

Also, does the main seal kit from MSA have the side seals for the rear?
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