IHADAV8.com - Turbo Buick Tech, and Nonsense
Tech Area => General Buick Tech => Topic started by: Scoobum on April 21 2018, 06:51:51 PM
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I'm calling bullshit on the thread on the other board questioning Precision turbos poor reliability. I've had this Precision 6262 journal bearing turbo from its inception. I prolly got one from the first run. I have beat this turbo to death at the track...and I checked it today when we pulled the engine and it still has zero in and out play and minimal side to side play. I use dino oil and a Wix filter and a can of EOS and change the oil and filter after every 2 day race weekend.
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Some versions 20 years ago had problems and Harry was well known for blaming the customer for problems. I have not heard of any modern day problems.
If you did not have a Turbosaver, it was your fault, automatically.
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There isn't really issues with the sleeved bearings it is the ball bearing units. I've had friends that blew units up, most of these guys ran 4 cylinders. I did a search on lots of forums and they all showed how crappy the PTE turbos were built. The ball bearings are the size of a bb. There were turbo builders that tore a PTE and did a direct comparison to a Garrett and the ball bearings were twice the size in the Garrett. They also listed other short comings and there were many of these posts on numerous forums. I found it funny how Bison said he rebuilt the one guys but got rid of the ball bearings. :hmm And it's funny how lots of these posts slowly start disappearing when PTE comes on board! :(
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http://www.e3xtreme.net/2016-news-and-commentary/2016/11/23/precision-turbo-now-a-wabtec-company
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My T63E lasted forever at 30psi and tonnes of mileage.
I just bought a $178 "GT45" turbo off eBay - it has journal bearings and is proven. It is essentially a PT67 compressor with an PT88ish hotside.
Billet wheels and ceramic ball bearings are not worth the cost for a moderate improvement in performance, IMO.
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Come on Mike- if it does not cost $1,000 it will not work on a buick. every body knows that,
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My T63E lasted forever at 30psi and tonnes of mileage.
I just bought a $178 "GT45" turbo off eBay - it has journal bearings and is proven. It is essentially a PT67 compressor with an PT88ish hotside.
Billet wheels and ceramic ball bearings are not worth the cost for a moderate improvement in performance, IMO.
Tell mee that is not the retail price
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https://www.ebay.com/itm/Universal-Brand-New-GT45-Turbo-Turbocharger-Up-to-600-HP-V-Band-Flange-Sales/142772006812?epid=7018578156&hash=item213ddfef9c:g:KRQAAOSwdNFZcc tk&vxp=mtr (https://www.ebay.com/itm/Universal-Brand-New-GT45-Turbo-Turbocharger-Up-to-600-HP-V-Band-Flange-Sales/142772006812?epid=7018578156&hash=item213ddfef9c:g:KRQAAOSwdNFZcctk&vxp=mtr)
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If that had a three bolt flange I'd buy one to try out . Maybe I need to weld a four bolt flange on a header and go for it.
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Nick is running a 4 bolt. I'm sure it will become acceptable soon...
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There are more than a few guys running 9s with these GT45s. Making an adapter flange would be easy enough.
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I'm not real worried what others think, just the work involved in putting on a different flange and getting the exhaust and waste gate figured out.
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Not quite pt88 turbine as the 88 has a 83mm exducer and the gt45 is a 77mm.
So the eBay gt45 is a 68/77. It works well on small v8s, as it runs out of compressor before turbine. I’d think it’d be a laggy sob on a 3.8
All my dealings with pte was around the time all the pt5x series turbos we’re eating turbines. After 2 failures in a row on a friends car I had him send it to limit engineering and the issues went away.
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I was generalizing. ;)
But, since my flavour of turdbo LS is 5.3L or less it makes good sense. The 5.3L I built over the Winter has half-assed ported small-valve heads and an LS6 cam and ported LS6 intake so that will help the situation. The 4.8L I have on the floor is getting a healthy cam, some stock 241s, and a TBSS intake.
In either form they suit the GT45 turbo well.
So, if you are doing a 4.1L+ Buick V6, these GT45s would keep up alright. Employ some spooling tricks and it'll do alright by you.
EDIT: New muffler showed up today.
(https://gbodyforum.com/attachments/20180429_194024-jpg.87773/)
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OK, I'm seeing $130 turbos on the bay. Are there compressor maps for this stuff?
It would be quite funny to take a far east intercooler and turbo and be competitive in our elitist circles.
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OK, I'm seeing $130 turbos on the bay. Are there compressor maps for this stuff?
It would be quite funny to take a far east intercooler and turbo and be competitive in our elitist circles.
No, they are known-unknowns - but you can estimate the performance based upon known-knowns of like turbos. I'd argue that a bit too much thought is put into things sometimes... just accepting that it works in an acceptable range is good enough. It isn't an F1 motor.
I have a Chineseium (bottom mounted and scooped) intercooler on my TBSS and it is making 650+hp and has incredibly low IATs (at 12psi). I had a modified FMIC from an International semi on my Buick and it worked great at 30psi (it had better hold given the original application) and always had great IATs too. Cost effective options work.
The quality gap has closed and many of our speed parts are coming from off-shore locations... I'd like to continue to build fun cars AND put my girls through baseball, soccer, swimming, horseback riding, university, marriage too; and if it means a few "corners" are cut so be it.
I cannot wait to pull the compressor housing off and paint it lavender like the valve covers... and maybe put some My Little Pony stickers under the clearcoat too. Just to further fuck with people's egos.
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Cough, cough start looking at gt3582 turbos on eBay - you have to watch the specs as they vary but most of them are 62/62. They come in many flavors and results may vary. It’d be awesome to have the resources to do some independent testing.
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Cough, cough start looking at gt3582 turbos on eBay - you have to watch the specs as they vary but most of them are 62/62. They come in many flavors and results may vary. It’d be awesome to have the resources to do some independent testing.
https://www.ebay.com/itm/T3-GT3582-GT35-BALL-BEARING-Turbo-charger-Anti-Surge/112259795170?hash=item1a233488e2:g:7I8AAOSwARZXn5~1&vxp=mtr (https://www.ebay.com/itm/T3-GT3582-GT35-BALL-BEARING-Turbo-charger-Anti-Surge/112259795170?hash=item1a233488e2:g:7I8AAOSwARZXn5~1&vxp=mtr)
Yup, I am considering one of these for Natasha's Colorado. Folks are using them as twins for cheap on junkyard V8s.
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That's the thing about Chinese parts. They aren't automatically 100% garbage. If you give them a good print and a good materials list, they can make parts just as good as anybody can. THe trick is figure out which one you have at the time.
It's actually kinda funny how we see ''Made In China'' and think garbage, but on their end, they're creating a 'brand name' (wiht price) for the entire country.
Basically they feel like they're where Japan was in the 70's. Back when ''Made in Japan'' on electronics were crap. Boy have times changed there.
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William Edwards Deming, an engineer from Iowa helped post war Japan develop a systematic improvement in quality- an interesting read.
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William Edwards Deming, an engineer from Iowa helped post war Japan develop a systematic improvement in quality- an interesting read.
I attended a seminar by him around 1989
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William Edwards Deming, an engineer from Iowa helped post war Japan develop a systematic improvement in quality- an interesting read.
I attended a seminar by him around 1989
I attended Disney World around 1989.
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So did I- with my 5yr old. :hmm
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I got arrested for possession of alcohol by a minor in 1989.
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I got arrested for possession of alcohol by a minor in 1989.
I'm sure there was nothing minor about your behaviour at that point
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Earl i did that in 79 lol
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I believe there's a girl named Melissa will never forget me from 1989
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I got arrested for possession of alcohol by a minor in 1989.
FTFY. ;)
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*like*
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I got arrested for possession of alcohol by a minor in 1989.
FTFY. ;)
That's not illegal. Age of Consent in GA is 16.
Giggidy :tongue
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I got arrested for possession of alcohol by a minor in 1989.
FTFY. ;)
That's not illegal. Age of Consent in GA is 16.
Giggidy :tongue
With or without a signed permission slip from a parent or guardian?
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I got arrested for possession of alcohol by a minor in 1989.
FTFY. ;)
That's not illegal. Age of Consent in GA is 16.
Giggidy :tongue
With or without a signed permission slip from a parent or guardian?
Without, of course.
It is against the law to take nudies before they're 18, but as long as the cameras are off, you can treat 'em like a 3 hole golf course.
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Earl's layin' pipe. https://www.youtube.com/watch?v=sw8S_Kv89IU (https://www.youtube.com/watch?v=sw8S_Kv89IU)