Jump to content


Welcome to Autoshite

Welcome to Autoshite, like most online communities you must register to view or post in our community, but don't worry this is a simple free process that requires minimal information for you to signup. Be apart of Autoshite by signing in or creating an account.
  • Start new topics and reply to others
  • Subscribe to topics and forums to get automatic updates
  • Get your own profile and make new friends
  • Customize your experience here
Guest Message by DevFuse
 

Photo
Project

1951 Pontiac Chieftain - Off with his head!

Project

  • Please log in to reply
1128 replies to this topic

#1111 ONLINE   PhilA

PhilA

    Rank: Renault 16

  • Full Members
  • 2,908 posts
  • 30 thanks
  • LocationLarose, Louisiana
  • Country : Country Flag

Posted Yesterday, 06:45 PM

20190223_122930_1.gif

Pistons! Valves!


Phil
  • danthecapriman, mat_the_cat, vulgalour and 9 others like this
I'm a Byte Wizard. I've been told so.
131372.png

#1112 OFFLINE   spartacus

spartacus

    Rank: Citroen Ami

  • Full Members
  • 1,836 posts
  • 25 thanks
  • Country : Country Flag

Posted Yesterday, 07:20 PM

Mega!
It is huge, I'm surprised it doesn't weigh more as a unit with the 'box. I'm sure an SBC with THM350 weighs more.
Are you re-fitting on your own, or getting help?
  • PhilA likes this

#1113 ONLINE   PhilA

PhilA

    Rank: Renault 16

  • Full Members
  • 2,908 posts
  • 30 thanks
  • LocationLarose, Louisiana
  • Country : Country Flag

Posted Yesterday, 08:07 PM

That combo weighs 165 lbs less than this does.

I'm going to put it back in by myself, it's remarkably straightforward with the front of the car removed.

Also, there's something in the GIF of the engine that I want the eagle-eyed of you to try and spot that's wrong.

Winner gets a hundred Internet points.

Phil
I'm a Byte Wizard. I've been told so.
131372.png

#1114 OFFLINE   egg

egg

    .

  • Full Members
  • 8,547 posts
  • 109 thanks
  • LocationHerne Bay
  • Country : Country Flag

Posted Yesterday, 08:28 PM

That engine is amazing.

 

'everything in teh past was better'

 

well it just was, wasn't it?


  • PhilA likes this

1967 Mk12c Invacar, 1993 Ford Mondeo 1.6 base, 1995 Mazda 323c 1.5 auto.


#1115 OFFLINE   mat_the_cat

mat_the_cat

    Rank: Renault 16

  • Full Members
  • 3,978 posts
  • 15 thanks
  • LocationRiding the trough of the fashion wave

Posted Yesterday, 08:33 PM

Number 4 cylinder, the valves appear to change the opening order?



#1116 OFFLINE   Snipes

Snipes

    Rank: Renault 16

  • Full Members
  • 3,202 posts
  • 23 thanks
  • LocationKent
  • Country : Country Flag

Posted Yesterday, 08:41 PM

3rd cylinder from the front has some funky valve timing?

#1117 ONLINE   PhilA

PhilA

    Rank: Renault 16

  • Full Members
  • 2,908 posts
  • 30 thanks
  • LocationLarose, Louisiana
  • Country : Country Flag

Posted Yesterday, 08:43 PM

You are both on the right track, but not correct.

The odd order is a trick of the camera shutter speed versus how fast it spins over on the starter (6V starter, 12V battery). I had to slow the GIF down to 50% to make it display better.

Phil
I'm a Byte Wizard. I've been told so.
131372.png

#1118 OFFLINE   Snipes

Snipes

    Rank: Renault 16

  • Full Members
  • 3,202 posts
  • 23 thanks
  • LocationKent
  • Country : Country Flag

Posted Yesterday, 08:47 PM

Cylinder nearest gearbox seems to be missing a valve?
  • PhilA likes this

#1119 ONLINE   PhilA

PhilA

    Rank: Renault 16

  • Full Members
  • 2,908 posts
  • 30 thanks
  • LocationLarose, Louisiana
  • Country : Country Flag

Posted Yesterday, 08:54 PM

Cylinder nearest gearbox seems to be missing a valve?

Bingo! The exhaust valve was stuck open. I had heard the engine down on one pot the last time I ran it, that'll be the culprit.

20190223_131240_1.gif

I doused it in penetrating oil and gave it some gentle persuasion with the handle of my lump hammer. The bolt holding the manifold on goes through to the water jacket, was leaking past the manifold and it had drawn water through and gotten onto the valve stem.

That cleaned off, it moves freely again.

I've been told the copper gaskets are not reusable (despite this one looking like it's been used several times).

Top end gasket set and I think I'll be good.

Phil
  • mat_the_cat, dome, somewhatfoolish and 2 others like this
I'm a Byte Wizard. I've been told so.
131372.png

#1120 ONLINE   PhilA

PhilA

    Rank: Renault 16

  • Full Members
  • 2,908 posts
  • 30 thanks
  • LocationLarose, Louisiana
  • Country : Country Flag

Posted Yesterday, 09:01 PM

That engine is amazing.
 
'everything in teh past was better'
 
well it just was, wasn't it?


Well, consider The design of that can trace it's roots to the early 1930's...

It's before 1986; acceptably early.

Phil
  • LightBulbFun likes this
I'm a Byte Wizard. I've been told so.
131372.png

#1121 OFFLINE   FPB7

FPB7

    Rank: Renault 16

  • Full Members
  • 4,239 posts
  • 15 thanks
  • Country : Country Flag

Posted Yesterday, 09:03 PM

Nah, the copper gaskets can be reused - they do need anealing though before reuse. That’s as long as it’s complete. Sadly on this side of the pond straight eight copper gaskets are a little thin on the ground. I had to do a top end on a Packard super eight a while ago and the only way was to get a new one custom made. I did find a place near to me that can do custom copper gaskets and looking recently, it seems that they are still around.
  • PhilA and dome like this

#1122 ONLINE   PhilA

PhilA

    Rank: Renault 16

  • Full Members
  • 2,908 posts
  • 30 thanks
  • LocationLarose, Louisiana
  • Country : Country Flag

Posted Yesterday, 09:07 PM

It's copper on the block side, that only folds around to form the fire ring. The top side is some silver tinfoil stuff.

Funnily head gaskets after available for these- $64 a pop. Not too bad considering they're custom made.

How hot you gotta get them to anneal the copper?
I'm a Byte Wizard. I've been told so.
131372.png

#1123 OFFLINE   FPB7

FPB7

    Rank: Renault 16

  • Full Members
  • 4,239 posts
  • 15 thanks
  • Country : Country Flag

Posted Yesterday, 09:08 PM

Cherry.

Thanked by 1 Member:
PhilA

#1124 ONLINE   PhilA

PhilA

    Rank: Renault 16

  • Full Members
  • 2,908 posts
  • 30 thanks
  • LocationLarose, Louisiana
  • Country : Country Flag

Posted Yesterday, 09:11 PM

It looks to be some sort of composite stuff inside. I don't think it'll tolerate cherry red heat, so new gasket is probably the way to go.

A copper gasket that's never been heat cycled doesn't need doing, right?

Phil
I'm a Byte Wizard. I've been told so.
131372.png

#1125 OFFLINE   320touring

320touring

    Fu'Gutty

  • Full Members
  • 10,952 posts
  • 39 thanks
  • LocationUp 'eh Road
  • Country : Country Flag

Posted Yesterday, 09:15 PM

Superb work, looks like you're powering through it.

I need a larger engine.
  • PhilA likes this
Read about my chod based adventures here:
http://fuguttycars.wordpress.com/

#1126 OFFLINE   FPB7

FPB7

    Rank: Renault 16

  • Full Members
  • 4,239 posts
  • 15 thanks
  • Country : Country Flag

Posted Yesterday, 09:19 PM

Nah, should be soft enough when new. The one we had made (the old one had blown between cylinders) was pure copper - I had no clue as to whether that was original or not but beggars can’t be choosers. It had to come apart again, strangely enough for a stuck valve and the guys who made the gasket told me just to anneal it by getting it cherry and letting it cool by itself. If you quench, it’ll just make it brittle and hard.

$64? Bloody hell, at those prices it’s a no brainier!
  • PhilA likes this

#1127 ONLINE   PhilA

PhilA

    Rank: Renault 16

  • Full Members
  • 2,908 posts
  • 30 thanks
  • LocationLarose, Louisiana
  • Country : Country Flag

Posted Yesterday, 09:27 PM

I'm going to go get a new blade for my scraper, clean the head and block up, probably whiz the paint off and redo it in green. I'm thinking of getting some John Deere green, and some Windsor Blue engine paint and mixing them to get the correct shade green for this (or something close, at least).

Phil
  • LightBulbFun likes this
I'm a Byte Wizard. I've been told so.
131372.png

#1128 ONLINE   PhilA

PhilA

    Rank: Renault 16

  • Full Members
  • 2,908 posts
  • 30 thanks
  • LocationLarose, Louisiana
  • Country : Country Flag

Posted Today, 12:26 AM

20190223_163849.jpg
Went to AutoZone.

20190223_164257.jpg
Bought a box of 100 #9 razor blades. 10¢ a pop but it pays dividends to be able to replace them regularly when going over coolant passages and bolt holes.

20190223_175315.jpg
Broke out the brass brush. Going to need a new one soon.

20190223_180246.jpg
Looking pretty good actually.

20190223_181008.jpg
Gave these pistons a quick wipe over with carb cleaner, then soaked them in protective oil.

20190223_180459.jpg
Finally re-coated the head in protective oil for the night. Big storm rolling in, put a stop to working outside.

Phil
  • DeeJay and LightBulbFun like this
I'm a Byte Wizard. I've been told so.
131372.png

#1129 ONLINE   DeeJay

DeeJay

    Rank: Citroen Ami

  • Full Members
  • 1,982 posts
  • 12 thanks
  • LocationLiverpool
  • Country : Country Flag

Posted Today, 01:45 AM

The rate you're going at it'll be painted, back in the car and ticking over by Wednesday.


  • LightBulbFun likes this





Also tagged with one or more of these keywords: Project

3 user(s) are reading this topic

1 members, 2 guests, 0 anonymous users


    PhilA