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Posted: October 27th, 2005, 5:15 pm
by bmwm3guy
Pri-T-tite wrote:Hey so if I get a turbo from the junk yard or something I can just get a manifold and intercooler welded to fit, right.
yup

Posted: October 28th, 2005, 7:04 pm
by Pri-T-tite
could someone give me a list of the parts i will need to completely build my own turbo. I already have a turbo and manifold

Posted: October 28th, 2005, 7:08 pm
by fieromx3
BOV, oil lines to the turbo, IC(optional but very recomended), wastegate if external, downpipe, if external wastegate boost control i think, IC piping, couplers, all fittings and little acc.
i know there is more so plz add on to this

Posted: October 28th, 2005, 7:18 pm
by Pri-T-tite
what is BoV. the vacuum

Posted: October 28th, 2005, 7:26 pm
by fieromx3
BOV- blow off valve
a blow off valve is connected to ur intake pipe. when ur floorin ur car ur turbo is makin boost and when u let ur foot off of it there is still pressure in ur intake and u do not want all that boost left in there with ur foot of the gas so ur blow off valve takes that boost and vents it to the atmosphere in a pshhhh sound. a BOV can also make ur turbo last longer, work more efficient and u get that kool pshhhh sound!

Posted: October 28th, 2005, 7:51 pm
by Pri-T-tite
hey thanks for the help so far

Posted: October 29th, 2005, 7:30 am
by babyblueMX3
fieromx3 wrote:BOV- blow off valve
a blow off valve is connected to ur intake pipe. when ur floorin ur car ur turbo is makin boost and when u let ur foot off of it there is still pressure in ur intake and u do not want all that boost left in there with ur foot of the gas so ur blow off valve takes that boost and vents it to the atmosphere in a pshhhh sound. a BOV can also make ur turbo last longer, work more efficient and u get that kool pshhhh sound!
you got the general idea of it but it's not quite that

when you boost, there a big pressure in the intake piping, but when you shift or let of throttle, the throttle body plate closes but the compressor keeps turning ! so the air will try to come back on the opposite direction (agaist the compressor wheel) so that's why this bov is in place so you can release the pressure. In the first case, the compressor will drop the velocity it's turning when when you'll come back in gear it's going to take more time to hit peak boost and you can damage your compressor..
Bottom line if you are boosted you need a bov or by-pass (instead of dumping the air to atmosphere it's plumb back into the intake)

Posted: October 29th, 2005, 11:25 am
by fieromx3
thats what i actually meant srry if i didnt word it right cuz i know u dont want all that pressure goin back i knew its not good for the turbo but i didnt know it would damage the compressor wheel that 1 i just learned. well thx for cleanin the wordin up though

Posted: October 29th, 2005, 11:27 am
by fieromx3
also bov's do vent it to the outside but some ppl make it that all the air goes back into the intake insted of outside

Posted: October 29th, 2005, 11:36 am
by babyblueMX3
fieromx3 wrote:also bov's do vent it to the outside but some ppl make it that all the air goes back into the intake insted of outside
yeah that's what I was talking about at the end of my last post. It's called a bypass valve

Posted: October 31st, 2005, 4:42 pm
by Pri-T-tite
hey i have a damaged turbo. this guy told me its vacuum ?(something)? needs to be replaced does anyone know what he is talking about

Posted: October 31st, 2005, 8:42 pm
by babyblueMX3
vacuum ? nothin in a turbo is called vacuum .. there's a fitting on some turbos that has a vacuum fitting. not sure if it's that he's talking about

Posted: October 31st, 2005, 9:57 pm
by Pri-T-tite
i think he said it had something to do with the external wastegate.

Posted: October 31st, 2005, 9:58 pm
by babyblueMX3
well if the turbo has a wastegate external then what's the problem with the actual turbo ? the wastegate is not even on there unless you meant internal wastegate

Posted: October 31st, 2005, 10:34 pm
by Pri-T-tite
sorry internal. fat fingers or something