ZL-1 #65 reunited with her original engine!!!

[John]

<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">a bit of trivia - anybody know why the chaplets on those aluminum heads all have little &quot;dots&quot; in the centers of them?</div></div>

...Would they give reference to the day, time of day or shift that these heads were made? [img]<<GRAEMLIN_URL>>/dunno.gif[/img]

[resto4u]

There would have been multiple pour points in the mold, and several vents to let the air out as the mold is poured so you have no voids. In 69 the quality of the aluminium was poor compared to todays aluminium alloys. Many more heads and blocks would have survived. Roger

[bergy]

Actually, those 4 little round impressions are chaplets that were placed in the mold to keep the water jacket from moving during pouring/solidification. The heads are poured combustion chamber up. The chaplets are steel, so they didn't fuse during pouring with the relatively low temperature aluminum. This lack of fusion enabled water to &quot;weep&quot; out through chaplet stem when the engine was fired up. The simple fix for this water leak was to hit the center of the chaplet face hard with the point of a punch - forcing the steel to come in better contact with the aluminum. This &quot;repair&quot; was also incorporated on iron heads when the inspector noted poor fusion at the chaplet area.

The aluminum entered the molds through 6 gates located on the parting line of the exhaust manifold face. Evidence of these gates was later machined off. The mold was vented at the at the core prints, so no evidence of venting remained on the castings.

[Tracker1]

Eilenberger, you're scary. Where do you keep all this stuff in your brain???

[njsteve]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Tracker1</div><div class="ubbcode-body">Eilenberger, you're scary. Where do you keep all this stuff in your brain???

</div></div>

His response sounded like something Cliff Clavin would have said on Cheers.

...As a matter of fact there Normey, the chaplet was a little known device that cowboys wore on their chaps to prevent chafing in their nether regions...&quot;

[img]<<GRAEMLIN_URL>>/blush.gif[/img]

[VintageMusclecar]

lol @ Steve! [img]<<GRAEMLIN_URL>>/haha.gif[/img]

[ZL1_COPO_65]

More pics added to the Flickr link;

ZL1#65 Flickr Link

[427freak]

Thank you for the pics. Glad you were able to retrieve the engine. Always liked this car. [img]<<GRAEMLIN_URL>>/biggthumpup.gif[/img]

[69LM1]

Hi Arthur, it is likely that our two cars campaigned along side each other back in the day. I'll have to ask Ron (original owner of Tin Soldier) if he remembers running Roger.

Was your ZL1 called &quot;Chevy Thunder&quot; back in 69?


Rich

[supercomp 8.90]

oh wow I just looked at the photos from the link the car is not even back halfed! original frame rails dual exhaust plate still there! trunk floor looks to be intact also, front and rear floors intact. this car can be easily put back. charlie was right this was a smokin deal for someone, now with finding the original driveline this can actually put this zl1 in to the very few cars that have there complete original driveline intact amazing!!