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I achevied my full boost potential 700

I want to take just a min to tell every one who has help me in narrowing down my little gremlins in my newly bought 740ti project. With everybodys input and ideas, i have finnaly found my stock boost!!! Now its time to tinker....
Thanks again,
Dave
Charlotte, NC
--
85 740 b230f+t








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I achevied my full boost potential 700

Careful on the boost tinkering or you'll discover your full "hole in the side of the engine block" potential... ;)
What was the final fix?

Shifted
--
'87 745t 215,000; '93 Toyota MkII; '73 Suzuki Jimny (Brute) LJ20 360cc








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I achevied my full boost potential 700

What worked to drive the gremlins out?
--
"Be blessed in your quest'' 89 764 (110K), '94 940T (180K) , '92 745T (totaled 2-10-05 RIP)








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I achevied my full boost potential 700

persistance and patients.. And lots of sleepless nights. This has been close to a 4 month battle.
--
85 740 b230f+t








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I achevied my full boost potential 700

Curious minds still want to know. Was there one (or more) particular fixes that really made a difference?

I have personally found and seen that there are many things we do to our Volvos in search of a fix - replacing parts that do not need to be replaced. Sure, we get new parts here and there, so we do not have to worry anymore about that piece for a spell - but man, it can get pricey!
--
"Be blessed in your quest'' 89 764 (110K), '94 940T (180K) , '92 745T (totaled 2-10-05 RIP)








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I achevied my full boost potential 700

I have spent many weekends on this thing. It has been a long 4 months (not my only car)

(1) o2 sensor was so covered up with carbon, atleast 1/8 inch thick, i cleaned it and reinstalled.
(2) pressurized entire turbo piping with my air compressor, found master
cylinder gromet leaking
flame trap hosing, "all of them"
MY boost gauge tubing
(3) replacing all of the electrical components from my donor 760 to no
avail, even frying an ecu!!!
(4) This whole time it was all just air "boost" leaks, but a bunch of them..

I still thin my os sensor is fried, just saving up to get a new one.
--
85 740 b230f+t








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I achevied my full boost potential 700

FYI: Regarding replacing your oxygen sensor. Your car uses a standard Bosch sensor. Go to your local parts store and get one for a Ford Mustang w/ 5.0 ltr V8. There's nothing special about the Ford part, it's just that Bosch makes so many of them that they sell for a lower price. $40 to be exact! Splice in your connector (with solder and heat shrink tube) and your in business.

If you want more information on this subject, do a search. There have been plenty of threads on the topic.

Jeff Pierce
--
'93 945 Turbo ( one kickass family car ! ), '92 Mercedes 190E (my daily driver), '53 Willys-Overland Pickup (my snow-plow truck/conversation piece -- sold to a loving home), '85 Jeep CJ-7 w/ Fisher plow








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I achevied my full boost potential 700

what years fords V8, O2 units, work in a 89 745Tic with bosch cpu ?

will they allso work in a 94 940 [my other car] ??

thats a big savings over the 160 my local cheap parts store wanted








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I achevied my full boost potential 700

It doesn't matter what year Ford -- they're all the same. I think the one I bought was for a 1991. But ANY Bosch 3-wire sensor from any car will work. The Ford just happens to be very inexpensive. Although I've never priced one, I bet the O2 sensor for a Chevy (350 or 305 for example) would be comparably priced.

These sensors will work on any Volvo with Bosch ignition/fuel injection. (All Volvo turbos have the Bosch system, and SOME non-turbo Volvos do too.) However, they WILL NOT work on Rex/Regina cars -- they use a completely different type of sensor.

The only difference between the Volvo Sensor and the Ford sensor is the connector. (And the price!)

The pricing seems to be based on the number of units produced & sold. What's really silly is that a sensor with a Ford connector actually costs less than a "generic" sensor -- which is the same sensor, WITH NO CONNECTOR ON IT AT ALL! Go figure.

Jeff Pierce
--
'93 945 Turbo ( one kickass family car ! ), '92 Mercedes 190E (my daily driver), '53 Willys-Overland Pickup (my snow-plow truck/conversation piece -- sold to a loving home), '85 Jeep CJ-7 w/ Fisher plow








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I achevied my full boost potential 700

The pressurizing of the system as you mention is my next step. I have a stumble under boost - and it also feels like at times that it is bogged down. The last thing I did was replace a small check valve that the FAQ's told of. That helped, but still a ways to go.

Is that the problem you had -or more?

You mention flame trap hosing ...were they leaking/seeping oil? I smell oil all the time, and I think this is one area that needs a real cleaning.
--
"Be blessed in your quest'' 89 764 (110K), '94 940T (180K) , '92 745T (totaled 2-10-05 RIP)







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