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Old 28th July 2017, 05:45 PM   #81
Walt Williams
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Re: Gonna do it. Lotus Esprit SBF.

Looks great cliff.... Keep up the good work..
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Old 1st September 2017, 03:18 PM   #82
Cliffbeer2
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Re: Gonna do it. Lotus Esprit SBF.

Quick update here fellas. As usual, progress is slow but moving forward.

The stainless 2.5" exhaust system is coming together. For about $400 bucks I bought a kit comprised of 304 stainless 45's, 90's and 180's, along with some 3/8th 3-bolt flanges and various extras (02 sensor bungs, ball/socket flange for the manifold, etc.). The muffler is a Magnaflow x-pipe designed to take corresponding inlets at both ends.

I'm trying to get some (equal) length into the system, hence the 180 bends and such. I expect this will be pretty loud but what the heck, it's not the businessmobile.

I'm just MIG tack welding it with 309L stainless. I'll take the pieces to a good welding shop so they can TIG weld it nicely. After all, it's going to get looked at...may as well have nice (and strong/sealed) welds.

Once the exhaust is set then the next job will be working on the rear brakes. My Lotus (1988) had inboard brakes....but that doesn't work with the audi 016 so I have to mount outboard calipers.

I'll keep plugging along.
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Old 1st September 2017, 03:20 PM   #83
Cliffbeer2
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Re: Gonna do it. Lotus Esprit SBF.

and another pic.

hhhmmmm....having trouble uploading pics.
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Old 1st September 2017, 06:06 PM   #84
Walt Williams
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Re: Gonna do it. Lotus Esprit SBF.

I like it !!!!!!!!
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Old 20th September 2017, 08:25 PM   #85
Cliffbeer2
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Re: Gonna do it. Lotus Esprit SBF.

Making some slow progress. The custom 304 stainless exhaust system is nearing completion. Need to finish fabricating the downpipes from the exhaust manifold into the rest of the system.

Just got in the new injection manifold. I'll add the appropriate sensors here too - TPS, air flow, etc. Will be using the FAST 2.0 system.

I'm pretty impressed with the injection manifold. Pretty economically priced, nicely built, good quality product. The throttle bodies are well made - good casting and decent machine work. The manifold is equally nice. Some thoughtful touches - common vacuum plenum with single port/connection, good adjustability of the throttles, etc. You do need to do your own QC here however - several of the bolts were loose and the butterflies on one side needed a bunch of adjusting to synchronize. But overall, very nice.
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Gonna do it.  Lotus Esprit SBF.-img_7766-jpg   Gonna do it.  Lotus Esprit SBF.-img_7773-1-jpg   Gonna do it.  Lotus Esprit SBF.-img_7775-jpg  
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Old 20th September 2017, 08:39 PM   #86
Cliffbeer2
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Re: Gonna do it. Lotus Esprit SBF.

Incidentally, I'm stainless MIG welding the system with 309L. My stainless MIG skills are improving....thank god.

I took the system to a welding shop for finish TIG welding but they wanted $700 bucks. Seriously? For welding 6 joints? That's like $20 bucks an inch. Three welders sitting there on their thumbs with nothing to do. I said "OK, how about $400?" Nope.

Fine. I'll do it myself and improve my welding skills.
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Old 20th September 2017, 09:01 PM   #87
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Re: Gonna do it. Lotus Esprit SBF.

Good looking intake.
Good luck with the FAST 2.0 system. We have one in a box that we're trying to figure out what to do with.
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Old 20th September 2017, 10:52 PM   #88
jd3
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Re: Gonna do it. Lotus Esprit SBF.

Cliff, I've owned 7 Esprits over the years, including a 2003 3.5L biturbo V8. That factory V8 Esprit handled the power and extra weight fine, although I could sense the extra engine weight (probably close to what your 331 setup weighs, given the twin turbos, plumbing, etc) behind me when I drove it.

I think you have a great project there, and you will be happy with the result.


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