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-   C4 ZR-1 Technical Postings (http://zr1.net/forum/forumdisplay.php?f=9)
-   -   427 LT5 Build 2 underway (http://zr1.net/forum/showthread.php?t=24966)

tpepmeie 08-14-2016 09:35 AM
Re: 427 LT5 Build 2 underway
 
yes, it was Dom.

ALZR1 08-14-2016 11:21 AM
Re: 427 LT5 Build 2 underway
 
Quote:
Originally Posted by tpepmeie (Post 246352)
In case you guys want to follow along. The rotating assembly is together. My blog is updated with the latest steps. This will be the last update for awhile, as I need to get the cylinder heads ready and the cams timed.

http://pepmeierenginedevelopment.blogspot.com/

http://i1036.photobucket.com/albums/...e/IMG_0519.jpg

http://i1036.photobucket.com/albums/...e/IMG_0522.jpg

http://i1036.photobucket.com/albums/...e/IMG_0535.jpg




I like the Gas ports on the Pistons Todd

WARP TEN 08-15-2016 10:01 AM
Re: 427 LT5 Build 2 underway
 
OK Al, I'll bite: What are gas ports on the pistons? Those tiny little holes around the perimeters? And what exactly is their purpose? Inquiring minds want to know....-Bob

-=Jeff=- 08-15-2016 12:00 PM
Re: 427 LT5 Build 2 underway
 
Quote:
Originally Posted by WARP TEN (Post 246391)
OK Al, I'll bite: What are gas ports on the pistons? Those tiny little holes around the perimeters? And what exactly is their purpose? Inquiring minds want to know....-Bob
Yes Bob.. I stumbled across this:
Quote:
a gas port is a hole drilled from the piston deck (a vertical gas port) or from the top ring land (a horizontal gas port) to the rear of the top ring groove. The purpose of a gas port is to apply combustion pressure directly to the top ring, forcing the ring face firmly against the cylinder wall. The number, size, and location of gas ports vary with bore diameter, engine type, dome design, and the engine builder’s personal preferences.
Here is a link:
http://rehermorrison.com/tech-talk-2...-of-gas-ports/

WARP TEN 08-16-2016 10:59 AM
Re: 427 LT5 Build 2 underway
 
Quote:
Originally Posted by -=Jeff=- (Post 246394)
Yes Bob.. I stumbled across this:


Here is a link:
http://rehermorrison.com/tech-talk-2...-of-gas-ports/
Ahhh....thanks Jeff. I am enlightened! And the article itself was quite interesting. Right at the end it said: "When you cross the threshold of 1,000 horsepower, gas ports become essential for maximum performance." Certainly glad that Todd won't be held back any! --Bob

Jagdpanzer 08-16-2016 01:58 PM
Re: 427 LT5 Build 2 underway
 
Looking good Todd.
The new rod bolts appear to have larger heads.
Did the block require further clearancing from before?

tpepmeie 08-16-2016 08:22 PM
Re: 427 LT5 Build 2 underway
 
Quote:
Originally Posted by Jagdpanzer (Post 246433)
Looking good Todd.
The new rod bolts appear to have larger heads.
Did the block require further clearancing from before?
No. A bit of an optical illusion. The shoulder is a little fatter, but the overall height is the same as the prior bolts. No clearancing required.

Pete 08-16-2016 11:09 PM
Re: 427 LT5 Build 2 underway
 
Todd did you buy sleeves from AES?

Pete

tpepmeie 08-18-2016 08:02 PM
Re: 427 LT5 Build 2 underway
 
Quote:
Originally Posted by Pete (Post 246443)
Todd did you buy sleeves from AES?

Pete
No.

Jagdpanzer 08-19-2016 10:54 AM
Re: 427 LT5 Build 2 underway
 
Quote:
Originally Posted by tpepmeie (Post 246435)
No. A bit of an optical illusion. The shoulder is a little fatter, but the overall height is the same as the prior bolts. No clearancing required.
2" rods journals then?


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