New 87 GN (Topic merged with "It's On!" post)

[earlbrown]

I was talking about the chain slop potentially being a result of improper line boring. If the machinist takes off too much meat, the crank centerline will move up in the block closer to the cam. The solution is to buy a "shorter" timing set.
  It could be that the timing set is just worn out though. The only way to know for sure is to measure and see what's been done to that block.

[SuperSix]

I was talking about the chain slop potentially being a result of improper line boring. If the machinist takes off too much meat, the crank centerline will move up in the block closer to the cam. The solution is to buy a "shorter" timing set.
  It could be that the timing set is just worn out though. The only way to know for sure is to measure and see what's been done to that block.

Got it.

I am considering having someone so the short block for me..

I take it you're not a big fan of the Chinese front covers?

[Steve Wood]

Looks like a cheap chain to me...there is seldom justification for a double roller on our cars as we simply do not run enuf spring pressure to need one...after all, a well maintained factory engine will generally make well over 100,000 miles on the factory chain and eventually succumbs to heat and age.  I bought one car that had the original changed at 168,000 miles.  Some posted a link to a TAPerformance single roller that looked good.


As far as the cam goes, I would use the 208 degree cams that Licht sells, or one of the Lunati style cams if they are  still available.  Seems like they were around 205 degs.  And, someone will post the wonders of the Edelbrock or Sealed Power Cams that are about 204 on the intake duration.  Nothing magic about cams as long as the duration does not get too long...speakin g of the average street engine.


I am not averse to using Joe Gibbs break in oil for the first 1000 miles.


Earl's cover would be a mandatory purchase if I were to build a new engine....you don't know what you are going to get with a new chinese cover.

[SuperSix]

Looks like a cheap chain to me...there is seldom justification for a double roller on our cars as we simply do not run enuf spring pressure to need one...after all, a well maintained factory engine will generally make well over 100,000 miles on the factory chain and eventually succumbs to heat and age.  I bought one car that had the original changed at 168,000 miles.  Some posted a link to a TAPerformance single roller that looked good.


As far as the cam goes, I would use the 208 degree cams that Licht sells, or one of the Lunati style cams if they are  still available.  Seems like they were around 205 degs.  And, someone will post the wonders of the Edelbrock or Sealed Power Cams that are about 204 on the intake duration.  Nothing magic about cams as long as the duration does not get too long...speakin g of the average street engine.


I am not averse to using Joe Gibbs break in oil for the first 1000 miles.


Earl's cover would be a mandatory purchase if I were to build a new engine....you don't know what you are going to get with a new chinese cover.

Am I correct to be concerned with that funky lobe? The one next to it (#4 ex?) has a little damage too)

Ok, so this:
http://www.fullthrottlespeed.com/itemdesc.asp+ic+001BU208CAM+eq++Tp+
12 of these:
http://www.fullthrottlespeed.com/itemdesc.asp+ic+001BU969+eq++Tp+

What about springs? Like I said - I think the old ones are aftermarket -
These?
http://www.fullthrottlespeed.com/itemdesc.asp+ic+105980-12+eq++Tp+

This:
http://www.taperformance.com/proddetail.asp?prod=TA_V1521

Earl - how much for a pimpin' front cover?

[SuperSix]

And I have a brand new KB booster plate kit, if that matters.

[Scoobum]

List looks good. Those are likely Comp lifters...they can be noisy. I've used 'em...no issues. Same for the springs...used 'em...no issues. Grab one of Earls front covers. Break in is critical for the cam/lifters.

[daveismissing]

I thought TA had the best "stock" lifters?

[Steve Wood]

cam looks like a cheap casting to me...I would be nervous about using it.  Noisy lifters often set off the knock sensor...I would not use them

[SuperSix]

cam looks like a cheap casting to me...I would be nervous about using it.  Noisy lifters often set off the knock sensor...I would not use them

Which cam? mine or the one I linked?

Are these the lifters you are talking about Dave?
http://www.taperformance.com/proddetail.asp?prod=TA_V1405

[Steve Wood]

Picture of the Postons cam

[SuperSix]

Seems this is the closest to the stock cam:
http://www.rockauto.com/catalog/moreinfo.php?pk=212866
CS-792 cam, & H969 lifters.

Yet more $$$. Fuck.

[Steve Wood]

my first choice remains the 208

[daveismissing]

Are these the lifters you are talking about Dave?
http://www.taperformance.com/proddetail.asp?prod=TA_V1405

Yes
Can't find the thread I really wanted  but here is somebody who uses them

http://www.turbobuicks.com/forums/buick-v6-turbo-tech/97003-comp-cam-lifter-fails-500miles.html

[SuperSix]

my first choice remains the 208

Ok, so this is the one then.
http://www.fullthrottlespeed.com/itemdesc.asp+ic+001BU208CAM+eq++Tp+

And the lifters he sells are the Sealed power 969 models I have seen good things about.

Not sure about the TA lifters, still researching.

Thanks.

[SuperSix]

Well, found a machine shop with the help of Jack DiLorenzo - Hope to drop the parts off this weekend (or soon)

Here's what I sent as what *I* think I need:
Check/polish/cut crank. It's .010 already.
Check the block, including the cylinders, check head area for flat (Plan on using Victor Reinz stock replacement gaskets)
Check rod ends for true
Line bore if needed
I don't think I need new pistons, maybe not even rings - cheap to replace if need be, I guess.

Heads:
Check and see if valve job is needed.
New springs for basically a stock replacement cam, probably this one:
http://www.fullthrottlespeed.com/itemdesc.asp+ic+001BU208CAM+eq++Tp+ with the Sealed Power 969 lifters
New valve seals

Evaluate cost for:
Port the heads
Install larger valves.
assemble short block

Nice run by JD (Jack DiLorenzo)
http://youtu.be/jl1l8ZBh6WU