Jump to content
Sign in to follow this  
Waco

Miata rebuild thread v. 2015 {UPDATED FOR 2016}

Recommended Posts

if you have to really seal an intake to keep it from blowing out you have other issues..... way to much internal pressure. Most of the times I've seen it they vent the breathers too small and when you seal the intake it blows the breather out.

 

 both covers should have open tubes to a catch can.... with good ring seal you should have minimal internal pressure but on boosted apps i set the rings pretty loose because under boost cylinder pressure spikes and rings will pinch shut.

 

 I'll set ring gaps at  .0065 x's bore size for boosted apps. looser on the 2nd ring yet.

 

 

I use sealant in Caulk gun form.... I do so many LOL I usually use permatex blue or GE blue...

LT1 is a special case, with a totally different intake setup from an SBC. In that case internal pressure doesn't cause it, just dramatic heating/cooling cycles in an oily contact area of two thin pieces of metal. No coolant flows through it so there is no front/rear gasket, and that whole area gets crazy hot if you have emissions since the stock EGR valve is right up against it. A quick search for "LT1 rear intake leak" will give tons of results - many of them probably with replies from me.

 

Mine leaked twice with standard Permatex, never leaked again when I used "The Right Stuff" :). Now that's all I use anywhere that touches oil.

Share this post


Link to post
Share on other sites

yep i am very familiar with LT1 engines. the "Black" silcon that factory installs leaks as well So does the Silver and Tan silicon they use on Corvettes...

 

I have a LT1 in my 98 Firebird.......

Share this post


Link to post
Share on other sites

Out with the old and in with the new:

PICTURE!

 

I bent the hell out of the old one playing with it before I pulled it out.  Such a POS. :lol:

Pic(s) of the bent wheel?

Share this post


Link to post
Share on other sites

I bent it back because Amanda wants to hang it on the wall in the garage. It's...mostly flat. :lol:

Rebend it and snap a shot for the memories! :D

Share this post


Link to post
Share on other sites

WHEEL see...hahahaha

 

Nah, maybe I'll have him bend it up to hang on the wall bent up -- kinda funny that way too. 

 

You should hang it up rebent to serve as a reminder and a warning to the new steering wheel.

Share this post


Link to post
Share on other sites
A bit of (cold) work today since the roads didn't get plowed.

 

Drilled/tapped/bunged:

11043347_10101885047601418_4662791375685

 

Pan remounted after being THOROUGHLY cleaned.  I don't want it to leak again.

10495381_10101885047606408_7890268790883

 

11026171_10101885047596428_3460497828157

 

Cleaned up the head surface...

10688216_10101885047621378_6672942385750

 

And the block surface...

11043388_10101885047616388_2075590814477

 

ARP studs! :D

10629459_10101885047611398_5358670150546

 

New MLS headgasket...stock is graphite core, figured I might as well upgrade now.

10995802_10101885047626368_4821300530220

 

...and head reinstalled!

11025943_10101885047631358_6212994240163

 

 

After a bit more cleanup and plumbing, as well as a few fixes while the engine is out, the heart will go back in!

Share this post


Link to post
Share on other sites

Drilled/tapped/bunged:

Sigged. :haha:

 

Nice work though, I can't seem to get anything done even when I'm snowed in.

Share this post


Link to post
Share on other sites
Retimed the cams and buttoned it up:

10914932_10101886241194448_2688397329208

 

Installed the studs and torqued everything together.

10256865_10101886241428978_1241761800292

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

×