355 Who has an early 355 equipped with a single-piece (center) undertray?

103154 has a two (2) piece undertray.

I heard they did this to make oil changes easier.

 

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S/N 100330
September 1994 Build

 

100005 does.
What was "Recall 156" and its relation to the single piece tray?

 

My F355 was first registered in November 1994. I bought it in 2004 and it came with a 2 piece undertray. It may have been changed out prior to ownership, but I highly doubt it. By the way, I would have been cursing a lot each time I did an oil change if I had to drop a massive single tray (I've probably changed the oil well over 30 times).

 

Mine (100329) has the 2 piece tray. It's only 1 car off from Barry's (they must have been painting yellow that day), so may be one of the first to get the 2 piece tray. I have no record of it being changed and it's pretty beat up, but the history I have only goes back to the early 2000's iirc when valve guides were done.

 

I'll contribute to the mold(s) if we can get carbon ones made

 

Cool item. Don't really want to know what it would cost to get a mold made of something that big.

 

Right, Ken. The one-piece undertray is pictured in the 1995 Parts Manual as the "Old Solution" but no part number is give. Consider it a "prototype" part.

Pete's car (S/N 100329) is my car's "sister" and has the two-piece undertray. This would indicate a transition to the two-piece undertray in September 1994.

My unerpanels and diffusers along with those of another F355 Challenge at Pocono Sportscar are off our cars right now being repaired and restored. They've had a hard life.

 

There you go! Ferrari made several one-piece undertrays until someone realized that it would be a pain in the ass to do an oil change and came up with the two-piece design.

This is what F355 Challenge undertrays go through on the track...





The only protection my car has down there are the undertrays and the Challenge reinforced rear chassis cross members.

You'll never find front bumper scuff plates on a Challenge car. If anyone ever put them there, the bumper would be torn off the first time the car ran over some high curbing.

 

I'm 100453. I guess I have the other version...

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Ken, in my car's many years of racing my undertrays and diffusers suffered scrapes and splitting at areas where there are fasteners. They've been patch-repaired every so often but now they're being fully restored. It's worth the expense. We'll start the cycle all over again.

Surprisingly, the flimsiest of all my car's underpinnings, the gear box heat shield, suffered very little damage over the years. It remains intact today with just a little loss of paint...


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What's your car's build date, Paul?

 

My build date is September '94.
My assembly number is 17482 if that helps.

 

#100298 has a single piece undertray. September 1994.

Part numbers are etched into the fiberglass components shown here: https://www.ferrarichat.com/forum/threads/f355-market.487947/page-365

No online part number for Item #51 in parts diagram.