Flaminia Coup -the Bugatti-Wagen- - Page 35 - Alfa Romeo Bulletin Board & Forums
 75Likes
 
LinkBack Thread Tools Display Modes
post #511 of 519 (permalink) Old 09-04-2019, 09:05 AM
Registered User
 
Giovanni1985's Avatar
 
Join Date: Jul 2017
Location: Italia, Brescia
Posts: 58
Garage
Hi Hubert, in the volume calculations do you also consider the thickness of the head gasket?
Giovanni1985 is online now  
Sponsored Links
Advertisement
 
post #512 of 519 (permalink) Old 09-04-2019, 11:26 AM Thread Starter
improving
Platinum Subscriber
 
Tedesco's Avatar
 
Join Date: Jan 2013
Location: Wuppertal
Posts: 342
Garage
Quote:
Originally Posted by Giovanni1985 View Post
Hi Hubert, in the volume calculations do you also consider the thickness of the head gasket?
Yes, I did. What I did not include in the calculation is the fireland and the space left because the piston does not exactly go up to the surface of the block but stays below it some tenth of a mm (if I m not mistaken).

Hubert


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Flaminia GT 3C, Flaminia Convertibile 3C, Flavia Convertibile 1.8, A112 Abarth, Flaminia Coupé 2.5, Fulvia Sport 1.3S, Unimog U900
Tedesco is offline  
post #513 of 519 (permalink) Old 09-04-2019, 11:31 AM
Registered User
 
Giovanni1985's Avatar
 
Join Date: Jul 2017
Location: Italia, Brescia
Posts: 58
Garage
have you ever tried to do a compression test on one of the newly rebuilt engines?
Giovanni1985 is online now  
Sponsored Links
Advertisement
 
post #514 of 519 (permalink) Old 09-09-2019, 11:15 AM Thread Starter
improving
Platinum Subscriber
 
Tedesco's Avatar
 
Join Date: Jan 2013
Location: Wuppertal
Posts: 342
Garage


Giovanni, your proposal almost made it.

Eleven studs could be removed. Welded original nuts from which I had removed the plastic rings to the studs and let them cool down. Where possible I heated the area around the stud in question with the torch and tried to turn it out with the wheel gun.
It took about twice as many nuts to get the pieces out. A few of the studs cracked where they come out of the head. These will have to be milled out. Let´s see how the other head turns out.



The four on the right were not stuck

Hubert
PSk likes this.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Flaminia GT 3C, Flaminia Convertibile 3C, Flavia Convertibile 1.8, A112 Abarth, Flaminia Coupé 2.5, Fulvia Sport 1.3S, Unimog U900

Last edited by Tedesco; 09-09-2019 at 12:09 PM.
Tedesco is offline  
post #515 of 519 (permalink) Old 09-09-2019, 09:54 PM
Registered User
 
Giovanni1985's Avatar
 
Join Date: Jul 2017
Location: Italia, Brescia
Posts: 58
Garage
Wow, honored to have contributed to a step forward. The remaining uses the milling machine?
you could try screwing new lubricated pins and making a last attempt with the extractor.
now the resistance will be much less and maybe the twist in the broken pins has decreased friction.
This reminds me of when I opened the water pump of my 2800, all the broken pins, in the 2500 instead no broken ...

Giovanni
Giovanni1985 is online now  
post #516 of 519 (permalink) Old 09-12-2019, 11:24 AM Thread Starter
improving
Platinum Subscriber
 
Tedesco's Avatar
 
Join Date: Jan 2013
Location: Wuppertal
Posts: 342
Garage
Panel beating







Worked on the last but one panel that has been sitting for some weeks. It turns out to be not the best panel ever, I missed the correct measures so that some corners need to be patched. Finally, I messed it all up with the beads, which are not presentable at all. Anyhow, nobody will see this panel again, once the car is assembled. This is not quality thinking, I know, but . . .





Docked a spare but freshly rebuilt Flaminia 2.5 1C to the Schenck. The adopterplate I had made recently turned out to be not fitting hence a new one had to be manufactured. The auxiliaries have to be installed yet. This will take place in my spare time (meaning in between).



Equipped the engine frame with quick-lifting-axles enabling me to place an engine on it by means of my overhead crane which is located close to the lift and then push it over to the Schenck. (Did I talk about that before? Don´t remember)

Ordered custom made head gaskets and pistons for the 3.0l. The gasket guy will pay a visit to “The Farm”. He worked for Goetze for more than ten years and has some experience in engine test stands. Could hear some tone of disbelief in his voice, when we were talking about the forty year old analog unit.
PSk and 1750GT like this.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Flaminia GT 3C, Flaminia Convertibile 3C, Flavia Convertibile 1.8, A112 Abarth, Flaminia Coupé 2.5, Fulvia Sport 1.3S, Unimog U900

Last edited by Tedesco; 09-13-2019 at 12:33 PM.
Tedesco is offline  
post #517 of 519 (permalink) Old 09-13-2019, 12:40 PM Thread Starter
improving
Platinum Subscriber
 
Tedesco's Avatar
 
Join Date: Jan 2013
Location: Wuppertal
Posts: 342
Garage
Quote:
Originally Posted by [email protected] View Post
Do the pistons have any dome to them?
Geoffrey,

the "dome" (ball scraper) on the standard 2.8 piston is 1,65 mm high on a base radius of 39,5 mm, the radius of the correspondig ball is 474 mm.

Hubert


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Flaminia GT 3C, Flaminia Convertibile 3C, Flavia Convertibile 1.8, A112 Abarth, Flaminia Coupé 2.5, Fulvia Sport 1.3S, Unimog U900
Tedesco is offline  
post #518 of 519 (permalink) Old Today, 06:48 AM
Registered User
 
Join Date: Aug 2006
Location: Chicago
Posts: 121
Hubert -
Thanks but can you clarify?

Is the general piston dome having the slight raise, and thus the big radius, and the “bulge” on top of the piston more pronounced, and thus the smaller radius?

Geoff
post #519 of 519 (permalink) Old Today, 10:28 AM Thread Starter
improving
Platinum Subscriber
 
Tedesco's Avatar
 
Join Date: Jan 2013
Location: Wuppertal
Posts: 342
Garage
Quote:
Originally Posted by [email protected] View Post
Hubert -
Thanks but can you clarify?

Is the general piston dome having the slight raise, and thus the big radius, and the “bulge” on top of the piston more pronounced, and thus the smaller radius?

Geoff
The piston top is plain with a diameter of 85 mm. The bulge (with a base diameter of 79 mm thus radius 39,5) sits on top of the plain, meaning you have a plain ring of three mms only. The bulge itself is a spherical cap of a ball with the radius of 474 mm, (calotte?).

In other words, cut a calotte of the given size off the very very top of that big ball and place it on a 85 mm dia disk.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Flaminia GT 3C, Flaminia Convertibile 3C, Flavia Convertibile 1.8, A112 Abarth, Flaminia Coupé 2.5, Fulvia Sport 1.3S, Unimog U900

Last edited by Tedesco; Today at 10:35 AM.
Tedesco is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Alfa Romeo Bulletin Board & Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome