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Battery Charge Levels If you have an accurate voltmeter or a digital voltmeter (preferred), just check your battery voltage at the battery terminals (with nothing on). The following numbers are for the newer gel type batteries, but regular lead acid batteries are not too far off from these...

Turbo Problem/Coolant Hose Maintenance Thanks for the information. Were you at least beating the Lambo at the time that the coolant line went out? Because of the turbo and exhaust manifold heat in that area, it would probably be advisable for all TT owners to check these coolant hoses for...

TO4B Problems Sorry to hear about your misfortune and ex-buddy story. If you have a digital camera and can take some close up pictures of the turbo assembly from all angles, email them to me and I will go by a couple of the big turbo boys out here in California and see what they think could...

Wastegate Rework I would not hesitate much to try Charlie Brown at Evergreen Turbo. At least on the phone with me several weeks ago, he seemed pretty knowledgeable on turbos and was not afraid to tackle jobs that required a little thinking on his part. If you decide to use him, make sure to...

VIN number/CarFax Tim, Can you check out this VIN for a 1988 Corvette convertible? 1G1YY3184J5122715 Thanks mucho, Steve email: mangusta1969@hotmail.com San Diego

Picture of Left Turbo (89-91 cars) Here is a jpeg image of a the left turbo. Image quality is not too good, because this started as a scan from a magazine photo. Better photos will be a big help as I try to find some parts and rebuild sources. Send them to steve@bigdog.ads-oh.atg.titan.com...

Rotomaster Turbo Pix/Numbers Needed Here is a Photoshop-massaged jpeg photo of the Callaway Twin Turbo setup that 89*2 sent me. This is for the right turbo assembly. In a second message, I will post a second picture showing the left turbo assembly. Can anyone send me or the forum some more...

Thanks! Malc350/Others, Thanks for the part number and pricing info on the Centerforce clutch and the experience statements that it holds up pretty well with the extra torque of the TT. I have a Centerforce unit in my 1969 Mangusta (Ford 302), with good results there, too. The Centerforce...

Centerforce Part Number Malc350, Can you share the Centerforce clutch part number with the group? Was that unit hard to obtain in the UK? If you bought it in the UK, I suspect the normal cost conversion bit you -- just take the US price in dollars and convert it to pounds, for about a 50%...

4+3 Survivability in a TT According to several knowledgeable guys that I have talked to over the last 3 months, at least in the later versions of 4+3 twinturbo cars, Callaway disabled the automatic downshift from overdrive mode to regular mode when under boost conditions. I think this was to...

Thanks for the offer You have private mail. Thanks for your kind offer. Steve

White Aero TT I was trying to see this car when it was traded for a 99 Fixed Roof C5 and a bit of cash just before Christmas. It is going from the Denver area to a museum in the Northeast someplace. This 88 car was offered to me at $25K in November/December. It had 43K miles on it (good)...

Ruby Red Aero TT For Sale I received a few photos on this car a while ago. It looks like there is a little bit of curb rash on the right front Dymag, so check that out carefully if you are interested in it. I think the car is located in Minneapolis. It is a pretty car, with low miles and a...

CarFax Request Here's another one for you, before you suffer CarFax burnout. 1G1YY318XH5112491 send results to mangusta1969@hotmail.com Thanks very much, Steve

Turbo Research 89x2, Thanks for the pictures. I will put these into Photoshop and see what we get. But I think the best approach is to get some detailed digital pix from 90 Callaway's spare turbo and see what the turbo experts think. Steve

Turbo Research 90Callaway, I understand completely your reluctance to part with your "spare" turbo. If you could take a couple of close up digital pictures from several different angles I will send them and discuss with Charlie. Maybe he has some undiscovered sources. I live about 90 miles...

Fla Turbo Shop I might be wrong on the left and right turbos being different, but I seem to remember that from some cobwebbed area of my brain. Anyway, I would be willing to purchase your turbo and send it in for a rebuild. I would also be willing to pay for the two way shipping down/back...

Guys, I talked at some length yesterday to Charlie Brown. He seems like a down to earth and knowledgeable guy who is willing to tackle difficult turbo problems. He told me that he had just obtained and machined some custom parts for a 25 year old way out of production turbo from a Big Cat...

Turbo Rebuild Question SurfNSun, Can you ask your rebuilder source what the cost would be if the following conditions exist on a 90 TO4B turbo (i.e., housing not in good condition): Housing cracked Inside of housing scored badly due to impeller rub Broken impeller blades (high temperature...

There were a few old threads on this topic in this forum, with some "possible" solutions for the replacement or refurbishment of the 88+ Rotomaster T04B turbochargers. But I did not see any actual results. Has anyone actually replaced the Rotomaster units with something newer/similar or...