Ben's Maserati Biturbo Spyder

Document and share your build!

Re: Ben's Maserati Biturbo Spyder

Postby Grillage » Mon Feb 26, 2018 9:42 am

Supposedly it has to do with the odd fire nature of the engine and is meant to smooth out the idle. I don't totally understand it and it's the subject of a spirited discussion on "Biturbo Zentrum" currently.
CURRENT
1995 90 Quattro
1994 Cabriolet - 5 speed

PAST
1993 Audi 90 CS Quattro - 1990 CQ - V8 - 1995.5 Audi S6 - 1993 Audi V8 - 2013 A5 Prestige - 2011 A4 Avant - 1986 Maserati Biturbo Spyder
User avatar
Grillage
 
Posts: 699
Joined: Feb 28, 2013
Location: Cincinnati, OH

Re: Ben's Maserati Biturbo Spyder

Postby vt10vt » Tue Feb 27, 2018 12:26 am

Grillage wrote:Supposedly it has to do with the odd fire nature of the engine and is meant to smooth out the idle. I don't totally understand it and it's the subject of a spirited discussion on "Biturbo Zentrum" currently.

Having been through a literally unbelievable number of "how do I jack up my car" threads on Porsche forums, I can only imagine what a "spirited" discussion looks like in the Maserati world.
-Shawn C.
2001 S4 6spd Avant blk/blk - stock daily
2002 01E B6 A4 Built FYF, Built 1.8T, HX35 ~330whp
1989 MC-1 200 Avant- MS1 -Gone but will never forget her lessons
1987 5ktq Sedan - Best $500 beater ever
User avatar
vt10vt
 
Posts: 941
Joined: Mar 10, 2013
Location: Winooski, VT

Re: Ben's Maserati Biturbo Spyder

Postby Grillage » Thu Mar 01, 2018 4:31 pm

Yeah, there are a number of UrS4boy's there. Lots of people stuck in their ways.

In fact the forum still uses Yahoo Discussions format - which is like hell itself.

In other news, this arrived today:
Image

The muffler is on the way too. This should run much better now!
CURRENT
1995 90 Quattro
1994 Cabriolet - 5 speed

PAST
1993 Audi 90 CS Quattro - 1990 CQ - V8 - 1995.5 Audi S6 - 1993 Audi V8 - 2013 A5 Prestige - 2011 A4 Avant - 1986 Maserati Biturbo Spyder
User avatar
Grillage
 
Posts: 699
Joined: Feb 28, 2013
Location: Cincinnati, OH

Re: Ben's Maserati Biturbo Spyder

Postby IslandRinger » Thu Mar 01, 2018 5:49 pm

Grillage wrote:Yeah, there are a number of UrS4boy's there. Lots of people stuck in their ways.


BEST QUOTE EVAARRRRR!!!!! :rofl: :hail:
Tarpan (Victoria, BC)
Stable:
2017 VW Golf Sportwagen 1.8T [DD/Family Wagen]
1996 Audi UrS6 [The Ongoing Project]

1986 Audi Coupe GT [SOLD]
User avatar
IslandRinger
 
Posts: 64
Joined: Dec 3, 2015
Location: Victoria, BC, Canada

Re: Ben's Maserati Biturbo Spyder

Postby alxdgr8 » Thu Mar 01, 2018 6:25 pm

IslandRinger wrote:
Grillage wrote:Yeah, there are a number of UrS4boy's there. Lots of people stuck in their ways.


BEST QUOTE EVAARRRRR!!!!! :rofl: :hail:


Hahahaha, indeed. There's a reason I only make a maybe monthly visit to the UrS section of QW.
-Alex- @vexartmedia on Instagram
1992 Porsche 968 (07K transplant in progress)
1983 Aud UrQ (MC1, GT2871R, IIc)
1986 Audi Coupe GT (7A swap and more)
2003 Audi S8 (Avus/Oxblood; DD)
User avatar
alxdgr8
 
Posts: 909
Joined: Feb 28, 2013
Location: Seattle, WA

Re: Ben's Maserati Biturbo Spyder

Postby Grillage » Thu Mar 01, 2018 6:33 pm

Don't get me wrong - he's one hell of a resource. The FAQ there is amazingly helpful. He can just be so difficult and know it all-y
CURRENT
1995 90 Quattro
1994 Cabriolet - 5 speed

PAST
1993 Audi 90 CS Quattro - 1990 CQ - V8 - 1995.5 Audi S6 - 1993 Audi V8 - 2013 A5 Prestige - 2011 A4 Avant - 1986 Maserati Biturbo Spyder
User avatar
Grillage
 
Posts: 699
Joined: Feb 28, 2013
Location: Cincinnati, OH

Re: Ben's Maserati Biturbo Spyder

Postby IslandRinger » Thu Mar 01, 2018 6:35 pm

Grillage wrote:Don't get me wrong - he's one hell of a resource. The FAQ there is amazingly helpful. He can just be so difficult and know it all-y
Exactly this. I'm grateful for his knowledge but he can be difficult for sure. I blame age lol

Sent from my SM-G930W8 using Tapatalk
Tarpan (Victoria, BC)
Stable:
2017 VW Golf Sportwagen 1.8T [DD/Family Wagen]
1996 Audi UrS6 [The Ongoing Project]

1986 Audi Coupe GT [SOLD]
User avatar
IslandRinger
 
Posts: 64
Joined: Dec 3, 2015
Location: Victoria, BC, Canada

Re: Ben's Maserati Biturbo Spyder

Postby PRY4SNO » Fri Mar 02, 2018 8:57 pm

Looking at that exhaust, I wonder if there's any chance it's meant to be an expansion loop? To allow for gain at the moment anchor and not affect the fitment?

Grillage wrote:Don't get me wrong - he's one hell of a resource. The FAQ there is amazingly helpful. He can just be so difficult and know it all-y



One word: engineer.
Find me on Instagram @pry4sno

|| 2010 Golf Sportwagen TDI /// Farmenwagen
|| 1992 80 quattro 20v /// Eventual AAN'd Winter Sled
|| 1990 Coupe quattro /// Because Racecar

|| Spare parts for sale
User avatar
PRY4SNO
 
Posts: 2085
Joined: Mar 3, 2013
Location: Edmonton, AB

Re: Ben's Maserati Biturbo Spyder

Postby Grillage » Wed May 30, 2018 6:10 pm

It's over!

Sold the car today

Image

So now I have more funds and time for this project:
Image
CURRENT
1995 90 Quattro
1994 Cabriolet - 5 speed

PAST
1993 Audi 90 CS Quattro - 1990 CQ - V8 - 1995.5 Audi S6 - 1993 Audi V8 - 2013 A5 Prestige - 2011 A4 Avant - 1986 Maserati Biturbo Spyder
User avatar
Grillage
 
Posts: 699
Joined: Feb 28, 2013
Location: Cincinnati, OH

Re: Ben's Maserati Biturbo Spyder

Postby DE80q » Wed May 30, 2018 6:27 pm

After all the work you put into to it, I hope you at least got a descent price for it... Hopefully the new owner will have better luck with it. Looking forward to the B4 conversion!
"If you can't find one, make one"

Dallastown, PA
1991 Audi 80 quattro (10vt project)
2007 Mitsubishi Raider(Dakota in disguise)
2014 Chevy traverse (It's what she wanted)
DE80q
 
Posts: 2192
Joined: Mar 4, 2013
Location: York PA 17403

Re: Ben's Maserati Biturbo Spyder

Postby Grillage » Wed May 30, 2018 6:35 pm

I actually did pretty well money-wise. It was time to clear space.
I'll have the B4 at Carlisle next year
CURRENT
1995 90 Quattro
1994 Cabriolet - 5 speed

PAST
1993 Audi 90 CS Quattro - 1990 CQ - V8 - 1995.5 Audi S6 - 1993 Audi V8 - 2013 A5 Prestige - 2011 A4 Avant - 1986 Maserati Biturbo Spyder
User avatar
Grillage
 
Posts: 699
Joined: Feb 28, 2013
Location: Cincinnati, OH

Re: Ben's Maserati Biturbo Spyder

Postby Sparkyjack » Wed May 30, 2018 8:40 pm

Grillage wrote:It's over!

Sold the car today



Congratulations!
Jack
There are 16 rings on my driveway
'90 CQ, '01 b5q(dogs)(auto), '09 b8q, '17 b9q (wife's)(auto)
Sparkyjack
 
Posts: 83
Joined: Jan 3, 2015
Location: Westminster, MD

Re: Ben's Maserati Biturbo Spyder

Postby mitchelperkins » Sat Jul 28, 2018 7:08 pm

Just for a quick update, I actually am the new owner of this car. I purchased it from Ben a few months ago and have enjoyed driving such a unique car around.

Sadly for this Biturbo its’ Italian reputation lives on and its down again - passenger side turbo is blown and the infamous fuse box problems have presented itself in a couple total power failures while driving.

In better light i’ve upgraded the old aftermarket radio to a much more modern unit and had every bit of the rust removed from the car while also taking out all the dents. A brand new windshield has been fitted and the car has been repainted and looks gorgeous. I am contemplating replacing both of the turbos with two much more readily available IHI RHB5 V195 units. I took the fuse box out and brought it to the best auto electrician in Louisville who resoderd the entire thing and am currently getting ready to put it back in the Maser.

https://imgur.com/a/CS1maJC
mitchelperkins
 
Posts: 4
Joined: Jul 28, 2018

Re: Ben's Maserati Biturbo Spyder

Postby Grillage » Sun Jul 29, 2018 2:54 pm

Hi Mitchel! Glad to see you found this thread

I gave you a rebuild kit for the turbos right? I bought one when I thought that was the source of the smoking early on and never used it

Sorry to hear the fusebox got that much worse. I wonder if that was the root of the problem we saw when we jumped the starter in my garage?

The pics look great - SUPER psyched to see it repainted!

The radio was a full on antique. was probably $400 new in the 80s
CURRENT
1995 90 Quattro
1994 Cabriolet - 5 speed

PAST
1993 Audi 90 CS Quattro - 1990 CQ - V8 - 1995.5 Audi S6 - 1993 Audi V8 - 2013 A5 Prestige - 2011 A4 Avant - 1986 Maserati Biturbo Spyder
User avatar
Grillage
 
Posts: 699
Joined: Feb 28, 2013
Location: Cincinnati, OH

Re: Ben's Maserati Biturbo Spyder

Postby mitchelperkins » Mon Jul 30, 2018 5:01 pm

Grillage wrote:Hi Mitchel! Glad to see you found this thread

I gave you a rebuild kit for the turbos right? I bought one when I thought that was the source of the smoking early on and never used it

Sorry to hear the fusebox got that much worse. I wonder if that was the root of the problem we saw when we jumped the starter in my garage?

The pics look great - SUPER psyched to see it repainted!

The radio was a full on antique. was probably $400 new in the 80s


Yeah, i have the turbo kit, but my first telltale sign of turbo failure came with a consistent shrieking noise early on in the boost and am also positive the compressor wheel and housing would have to be replaced as well, the parts being so ridiculously hard to find and expensive, i started looking for other cars with the factory IHI RHB5’s found in the Biturbo and lead myself towards a 1997 Isuzu Trooper Turbodiesel, which runs the exact same spec turbo with a slightly larger inducer and exducer. I got 2 brand new units for less than half the price of a single proper turbo cartridge for the car, so if i can make them work i will have 2 brand new turbos that can push a fair bit more boost into the engine. I also have an MIE intercooler kit ready for the car that i will also be fitting on as well, when all said and done i should have a relatively reliable, and extremely fast Maserati Biturbo. As with the fusebox issues, i would say that and the shaking dash gauges were definitely early signs of failure, the main power terminals on the fusebox had completely came lose and were arching. I fitted the refurbished fuse box today, and the Maser made it just fine 30 miles back to the paint shop for a new pinstripe - needless to say with some clouds of smoke.
mitchelperkins
 
Posts: 4
Joined: Jul 28, 2018

Re: Ben's Maserati Biturbo Spyder

Postby Grillage » Mon Jul 30, 2018 5:05 pm

This is great. I’m really happy that you’re continuing to improve on it!
CURRENT
1995 90 Quattro
1994 Cabriolet - 5 speed

PAST
1993 Audi 90 CS Quattro - 1990 CQ - V8 - 1995.5 Audi S6 - 1993 Audi V8 - 2013 A5 Prestige - 2011 A4 Avant - 1986 Maserati Biturbo Spyder
User avatar
Grillage
 
Posts: 699
Joined: Feb 28, 2013
Location: Cincinnati, OH

Re: Ben's Maserati Biturbo Spyder

Postby mitchelperkins » Mon Aug 06, 2018 1:53 pm

Driver side turbo is removed, like the note “last seen 9-21-17” written inside, this turbo is definitely bad! The compressor wheel has been wearing on the inner housing leaving a nice set of pretty deep grooves in it, i am assuming this is the source of the “shrieking” noise i was hearing that went away as the boost increased and the wobbling compressor wheel balanced itself. The exhaust side housing on the replacement turbos i ordered will not bolt up, so hopefully i can interchange the cartridges and reuse the exhaust housing and get this car back out on the road.
mitchelperkins
 
Posts: 4
Joined: Jul 28, 2018

Re: Ben's Maserati Biturbo Spyder

Postby Grillage » Mon Aug 06, 2018 2:22 pm

Nice! Hope you were able to pull the turbo without pulling the engine. You can get that one out that way for sure.

I was hoping no one would ever see that note!
CURRENT
1995 90 Quattro
1994 Cabriolet - 5 speed

PAST
1993 Audi 90 CS Quattro - 1990 CQ - V8 - 1995.5 Audi S6 - 1993 Audi V8 - 2013 A5 Prestige - 2011 A4 Avant - 1986 Maserati Biturbo Spyder
User avatar
Grillage
 
Posts: 699
Joined: Feb 28, 2013
Location: Cincinnati, OH

Re: Ben's Maserati Biturbo Spyder

Postby mitchelperkins » Mon Aug 06, 2018 6:55 pm

Grillage wrote:Nice! Hope you were able to pull the turbo without pulling the engine. You can get that one out that way for sure.

I was hoping no one would ever see that note!

Yep, got it out without removing much at all actually. The replacement turbos have a slightly different design on the exhaust side, the original Biturbo has the wastegate in a secondary split chamber and the new turbos i have are all in one chamber, looks like some modifications will be required, I may end up just rebuilding the original cartridge and replacing the compressor wheel and housing with the new one i bought.
mitchelperkins
 
Posts: 4
Joined: Jul 28, 2018

Previous

Return to Projects

Who is online

Users browsing this forum: Majestic-12 [Bot] and 4 guests