New project. 1987 Lamborghini Jalpa. There's no easy way out.

Timed

Secksea

Oh man I'm going to need a minute.

Spoke to him this morning. I'll be dropping off the rest of my fuel system tonight. He's got appointments this morning and then in the afternoon will be rigging the engine up to the dyno. So, basically as long as everything on the skid gets hooked up and good today, we should be running tomorrow. Sounds like sunday if it just goes crappy, but so far things are finally going smoothly.

At this point it sounds like it's just a matter of us getting things all wired up, cleared on the skid, and we should be groovy. I'll touch base tonight after I drop things off so we have a better idea of tomorrow or sunday. Fingers crossed I can get off work early today, so i can get stuff to him sooner than later. Then it'll be a matter of going to the bank monday, paying, and forever being sad that he is moving to arizona.

I'm really going to miss him. He's the coolest car guy I've met in these parts, knows his stuff, and is just an all around good guy.

Sweet!!!

Can't wait to see/hear it run, it's sure pretty!!

Fingers crossed for you getting this thing fired up.

I received an email from Jack Riddell this morning, regarding the design of the Urraco/Silhouette/Jalpa engine you may all find interesting:

Hi Derek, Got this from Pierre Le Muniere of the French Lambo club. He straightened me out - I thought Dallara had done this design. So sad that Stanzani just passed away. I met him for lunch one year and spent part of an afternoon with him during one of my Italy trips. A quiet, humble man as is Dallara whom I also met that trip. Dallara spent his entire lunch break at the Dallara factory with us answering questions about his early adventures. Anyway, some of the data in Pierre's notes might come in handy when you get the engine running. If I get more responses, I will give you a heads up. Cheers, Jack

Hi Jack, the V8 Lambo is not a Dallara design, but a Stanzani one, for the Urraco project, in 69/70 (Dallara has left in 68 or 69, after Ferruccio has named Stanzani chairman of the Sant'Agata factory). extra squared engine, 2462 ccm, officially 220 BHP and 23, then 21 mkg torque claimed on the brochures. On a maintenance brochure, the correct dyno testing were precised: 200 bhp and 19 mkg. This engine was very modern (belts) and conceived for manufacturing simplicity (flat heads, single cam shafts with aligned valves, externally tubes for oil way between bottom and heads...) On the 300 it was improved for better results and reliability: cam chains, DOC with V valves, and about 250 bhp/ 27 mkg. It was also fitted on the Silhouette, with sometimes slighly differents figures (260 bhp). probably for marketing reasons. The Silhouette dérived Jalpa's 3.5l (same power -255- but better torque -32?-) was an evolution in 82 under ex-Maserati ingeniere Alfieri leadership, during the Mimran area, along with 500 S Countach evolution. Pierre

In reply to corsepervita:

Manufacturing simplicity...I would have never guessed that by looking at it!

Well, it sounds like the earlier SOHC version was the simple one.
That was a neat write-up.

petegossett wrote: In reply to corsepervita: Manufacturing simplicity...I would have never guessed that by looking at it!

I was thinking EXACTLY the same thing !!!

Machinist is loading the engine on the dyno as we speak.

Well, back on the emotional rollercoaster. I'm about 10 seconds from just exploding, lighting my entire car on fire, the engine, and then myself, out of sheer frustration and anger.

So... the machinist is mocking things up and fitting them, and we found out that the belts I bought fit one of the pulleys, but not all of them, due to the spacing between the teeth. The supposed cross referenced belt that is given a part # for was far too long. 345L100 (92 teeth), 3/8" Pitch.

So... when trying to tension THAT up, because we couldn't get the metric belts to work, it hits up against the water distributor. We can't cut that too far because then we end up in a position where we are risking ruining or puncturing the housing.

I went down to NAPA and got belt 250095, which is a different width (still works) but at 89 teeth is TOO SHORT, at 3/8" Pitch. So, correct pitch, too short.

I went to oreiley's to find a belt and they have a 91, but it won't arrive till NEXT WEEK.

I need something with 90 teeth, maybe 91. 89 too short, 92 too long. He's still trying to get everything rigged up as if we were doing dyno day. And I'm about ready to just go jump off a cliff from being on this emotional rollercoaster so much. Me and my girlfriend split, work is insane, and every time I get my hopes up on this, SOMETHING goes wrong. I just am so tired and just hate this so much. I just want one thing to go right. Just one.

What's the part number at O'Reilly's? If they have it local here I'll FedEx you one tomorrow.

This will all make an amazing story to tell years from now. It's just hell right now; hang in there.

Stampie wrote: What's the part number at O'Reilly's? If they have it local here I'll FedEx you one tomorrow.

Only thing i've found so far to work is a 3/8" pitch (.375 pitch), and a pitch length of 34.5 pitch length. 91 teeth. I thought the part number was T171, but looking that up is like 100something teeth, which is way off.

A belt with a pitch length of 34.12 would be perfect too (90 teeth). Gates doesn't appear to make such a belt. The width doesn't matter as long as it's anywhere from half an inch, to an inch, or even maybe just a tad over 1 inch.

Here's one i found out of a parts manual that may work, no idea what car it fits. https://www.vbeltguys.com/products/337l050-d-n-d-power-drive-oem-equivalent-timing-belt

Here's a few more part numbers 341L050 is 91 tooth, 337L050 is 90 tooth.

Got Amazon prime?

https://www.amazon.com/PowerDrive-341L050-Timing-Belt/dp/B00ISC7F6Y

That's the best I could find. O'Reilly's didn't return anything.

Stampie wrote: Got Amazon prime? https://www.amazon.com/PowerDrive-341L050-Timing-Belt/dp/B00ISC7F6Y That's the best I could find. O'Reilly's didn't return anything.

I do.. I added both belts to my cart, soonest it can get here is "between the 14th and 16th" which is when my machinist has to start moving.

If I can find a car that uses a 3/8" 90 or 91 tooth belt i can probably find something. The 1" belts are "industrial timing belts", the napa belt (250095) is damn near there, and 1 or 2 teeth short. It's thinner in width, but a passenger car belt.

Search both part numbers on eBay. I got results but same seller and estimated Mar 20th to me in Florida. Maybe contact them and see if they'll overnight? Overnight from Iowa for a Lamborghini is still sexy right?

You can also walk into you local NAPA warehouse in the morning and look for the old guy behind the counter. Explain what you need and betcha they have it.

I'm on a few websites that don't have them listed by teeth, but have every belt listed. I'm literally just cntrl + clicking on every single belt possible looking for one.

Dayco 95178 is a fit, for a daihatsu. 91 teeth.

I was gonna say McMaster but they jump straight from 86 to 92. Could you make a smaller idler pulley to use the shorter belt?

You might try asking at the parts stores if Dayco 95178 is stocked at their hub, and just drive to the hub store and buy it.