crazy biturbo 986
 

Check out this crazy biturbo center drive 986:

https://www.motor1.com/news/243823/biturbo-porsche-boxster-bisimoto/

awesome build :cheers:
wanne see that baby in action now

Pure pornography. Should come with a disclaimer.

You guys know that I have a great appreciation for all things Boxster and especially any Boxster on a race tack, but a lot of people in the SoCal Porsche world have some serious concerns about this car.

The biggest issue is the builder (whom I have met and is a very nice guy) says its a "track car" but hasn't released any actual lap times. In the track world, that raises a lot of red flags. Track cred is almost entirely based on lap times.

For example, Jack Olson isn't just famous for his nice garage - he and his modified air-cooled 911 kicks ass around the track and Jack posts the lap times and data for anyone to analyze (Jack Olson Every Day Race Car).

If this Boxster was a SEMA build (where cool looks are all that matters), lap times wouldn't be an issue. But if you say that you've built a bad ass track car, you better have the lap times to back it up (even if you have to put a semi-pro or pro driver in the car to do it).

Besides the lack of lap times, there is a lot of concern that the 90mm tire stagger (235/325) will likely result in huge understeer (which will limit lap times). As you all know, stock Boxster's have 50mm of stagger (205/255) from the factory and exhibit a lot of understeer. Many owners reduce this inherent factory understeer by running 225/255 or 30mm stagger. Spec Boxster race cars run no stagger (255/255) to eliminate the issue completely. So, the 90mm of stagger is another red flag that this car may not have real track chops.

There are a lot of concerns about the parts selection. For example the $14K carbon fiber wheels weigh just a few lbs less than a stock 17" Boxster wheel. Yes, they are 20" but people are wondering why go 20" for a track car when there are equivalent weight 18" racing wheels available for 1/3 of the cost?

Online, the list of critique's goes on and on (and I suppose that is normal online behavior.) But they do raise some valid questions. Just wanted to share a bit of the discussion with the Forum.

well, i agree that thais car is most likely more show than go, but i'd argue with you on the stagger thing. no stagger may balance the car, but limits the amount of throttle you can put down on corner exit. 255 on the rear may be ok for a 200 hp spec racer, but for a beast you need more rear rubber. and you can offset that by adding more front rubber. what should be noted is that they've flared the front but not widened the front tires (if that's the case - i didn't watch the video). if so then more show than go for sure - flares to fit 235s? hell, i've widened my front track 15mm each side and am running 245s and still have room in the original fenders.

anyways, there is racing and there is spec racing. there is fast and there is spec fast. they are not mutually exclusive, but they are different.

Agree, the car has to have wider tires on the rear to put down the power, but needs somewhat wider front tires to balance the handling.

The opinions above are not my own (because all I know is Spec racing), but are the opinions of people who have built and successfully raced GT-classed Boxster's (most with 300-350hp). They don't see how that 235/325 tire stagger could possibly be fast. And they are calling Bisi out for it (the online posts are brutal, nothing like the kind posts here on 986Forum!)

So, without any lap times to compare against, all we get is a cool car that incites an internet war about its performance. I just wanted to let you know about the discussion. :)

I also want to say that I think its great that people are finally getting around to building extreme Boxster's! The Porsche world has seen almost every possible 911 creation (and abomination) known to man. Its about time that the tuner/builder world starts showing what they can do with the Boxster platform.

I have not watched he video yet, but in the write up never said anything about a track car. These guys probably built it specifically for the sema show, to show off the engineering. Will watch the video, when I get a chance.

and i think that is where the conversation is - why are there not more gt boxsters? lots of spec, but spec doesn't lead to the development of go-fast aftermarket support (makes for excellent drivers however ...). 911 rear engine even gets a penalty in nasa that the boxster doesn't. you'd think that there would be a lot more 3.4 or 3.6 boxsters out there.

There are pictures of it running at the KW Shakedown track day on a popular youth "stance" website (not sure if we are allowed to link to other websites)

It certainly looks impressive, but a few red flags for the track:
1. Line lock on the steering wheel - 👍🏻 at the strip...☣️ on a road course.
2. Boost on an M96 💣
3. Plastic engine cover 🔥

Well finally got to watch the video. So definately a race car.
I think the car is legit, definately not a spec racer. Since I know nothing
Of seting up geometry, couldnt say if the setup works, but taking it for face value the host asked about understeer, and the builder says it drives very well.

You have to keep in mind that the builder is known for building radicle race cars, so I still think this is an engineering excercise, to show possabikities.

Plastic cover is probably carbon fiber, since the wheels and roof among other things are carbon fiber.

Twin turbo but they are small turbos and has dump valves and software controls. Builder stated that was a test engine being used for development purposes as well.

Line lock why not I have a friend drives twin turbo gt3, he drag races it always been his thing.

The other button supposed to adjust boost to add HP, thats plausable and would reduce engine wear.

I am with Radium on this why are there no more buildes using the boxster platform for GT cars, it is good for develpment.

My issue isn’t with the line lock as much as the placement of the line lock button where it will be accidentally hit.

4. Aftermarket radiators to improve cooling yet no intake ducting for them and still using the puny base cooling tubes.
5. Removes the factory ABS and also keeps the three channel brake line system
6. Dirty oil pan. That thing looked like it came straight out of a donor car without getting cleaned
7. 526hp claim out of a 2.7 M96
8. 526hp through a 5 speed
9. It looks like it was painted in sections

I support anyone trying to elevate the boxster platform but this build is questionable to me.

I think 526hp would be obtainable, it is a twin turbo. He mentioned that they did do some internal engine work, which would have been necassary to keep the engine together with that much boost.

I think it was tcp engineering offers a low boost turbo kit, for boxster that adds 100hp at like 5 or 6 psi. This guy said they are running 26psi, at full boost. If nothing is a great conversation car. I really didnt like the builder much, but would like to see the car in person.

I agree with stroked that line lock button on a riad course not in a great spot.

526hp might be obtainable the second before the case explodes or the crank disintegrates. That's assuming he has upgraded rods and pistons. I wish the interviewer had asked more about the engine. I'm guessing that might have cut into his selfie time though.

Some track footage...

https://www.youtube.com/watch?v=mexUq6em9nQ

Well we can see it didnt blow apart!!:D

But the BOV would be annoying as hell. But thing bothers me they didnt post speed and lap info, or i just missed it.

Anyone have a link for all the forum with all the ********************ing about this car?

It was built as a SEMA car. What I don't get is why he should post lap times and why anyone would care? He's not racing it, he's using it for track days.

I know for a fact the 986 engine cover hold up in a fire. Mine stayed solid, I wish it hadn't to be honest as there would have been more chance of putting the fire out.

Speaking only for myself, I'd like to see lap times and speed information, so I know how to classify the car. I'd like to know, is this a bad ass, purpose-built, nasty track car? Or is it a poseur's abomination?
It's one or the other, with the determining Factor being those lap times and speed information.



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