Forced Induction and Engine Wear - Page 2 - Toyota Yaris Forums

cali yaris · 08-09-2009, 01:47 PM

^ no it isn't flawed, and the question has been attended to in this thread (and other threads). The engines you are reading about have decreased life too. First you say "safely giving them a relateively low boost" - correct, you can. Then you ask about engine longevity -- different subject.

Maybe this is a more clear way to put it:

1. FORCED INDUCTION POWER MODS WILL DECREASE THE LIFE OF YOUR ENGINE
2. THERE IS NO CHART OF WHAT "DECREASED LIFE" MEANS, PER PSI, OR IN MILES, TO AN INDIVIDUAL ENGINE

changchewsoon · 08-10-2009, 12:50 AM

i discovered that there are some visible signs of wear and tear to my crank and rod bearings after boosting the engine for about a year+.

cali yaris · 08-10-2009, 12:52 AM

^ Any pictures? I'm sure there would be a lot of interest in seeing that.

CASTREX · 08-10-2009, 01:20 PM

Safely means: "You don't blow your engine when you are doing a WOT pass" It doesn't mean that it will last the same as if you let your engine stock.

If a STOCK Yaris engine was supposed to get 350,000 miles before a rebuild... a boosted Yaris will get there sooner.

How sooner? There is no straight answer. Depends on the maintenance, and mostly in how you drive your car.

Upgraded internals such as forged pistons and rods are not intended to increase longevity... Those are made to increase the engines ability to handle higher boost levels. Usually when you built an engine is because is going take some abuse... Longevity is not a major concern for people who spend the big bucks building an engine.

Realiability, longevity = STOCK

can't beat that.

changchewsoon · 08-10-2009, 08:49 PM

Quote:

Originally Posted by cali yaris

^ Any pictures? I'm sure there would be a lot of interest in seeing that.

we discovered that when we took out the pistons for ceramic coating last round. i promise i will take pictures and post it up when we crack open the engine for rebuild. recently ordered toga bearings from IPP, will take some time for the shipment to reach Malaysia.

changchewsoon · 02-05-2010, 01:51 AM

some pics of the bearings that i took now that the engine is out for rebuilt.

cali yaris · 08-10-2009, 03:40 PM

Quote:

good idea is to build it for 250 more horsepower then you plan to have. :)

So I should have built for 600 hp? ouch.

Yoda · 02-05-2010, 09:46 AM

hmmmm

cali yaris · 02-05-2010, 10:19 AM

What to look for in these pictures? I'm no expert.

Yaris Hilton · 02-05-2010, 11:43 AM

There's some pitting there that shouldn't be.

changchewsoon · 02-06-2010, 04:37 PM

was boosting 9 psi and yeah i do push the car very hard most of the time, often lingering at the red line limit.

well nevertheless the bearings would have to be replaced. hopefully the Toga bearings I purchased from IPP will perform.

i wasn't able to locate a part number for our 1NZ from ACL and Clevite. if anyone here manages to do so appreciate if you could share.

alright, i'll try to snap pictures of the crank as well, was thinking to keep the stock crank pulley though.

08-09-2009, 01:47 PM	#1
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	^ no it isn't flawed, and the question has been attended to in this thread (and other threads). The engines you are reading about have decreased life too. First you say "safely giving them a relateively low boost" - correct, you can. Then you ask about engine longevity -- different subject. Maybe this is a more clear way to put it: 1. FORCED INDUCTION POWER MODS WILL DECREASE THE LIFE OF YOUR ENGINE 2. THERE IS NO CHART OF WHAT "DECREASED LIFE" MEANS, PER PSI, OR IN MILES, TO AN INDIVIDUAL ENGINE __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

08-10-2009, 12:50 AM	#2
changchewsoon View User's Garage Drives: Vios Turbo Join Date: Feb 2009 Location: Malaysia Posts: 190	i discovered that there are some visible signs of wear and tear to my crank and rod bearings after boosting the engine for about a year+. __________________ 454 whp, 1.7 bar boost, pump gas, water/meth. 501 whp, 2.2 bar boost, pump gas + avgas, no water/meth. www.viosturbo.com - World's first 500 WHP 1NZ-FE

08-10-2009, 12:52 AM	#3
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	^ Any pictures? I'm sure there would be a lot of interest in seeing that. __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

02-05-2010, 10:19 AM	#9
cali yaris ULTIMATE View User's Garage Drives: 07 Yaris Turbo Join Date: May 2007 Location: Canoga Park, CA Posts: 14,859	What to look for in these pictures? I'm no expert. __________________ Micro Image forums, online store and shop are now closed. It was a great eight year run, but it was time to focus on other things. I'm still selling parts on eBay under micro*image seller ID and customers can still make requests for anything specific.

02-06-2010, 04:37 PM	#11
changchewsoon View User's Garage Drives: Vios Turbo Join Date: Feb 2009 Location: Malaysia Posts: 190	was boosting 9 psi and yeah i do push the car very hard most of the time, often lingering at the red line limit. well nevertheless the bearings would have to be replaced. hopefully the Toga bearings I purchased from IPP will perform. i wasn't able to locate a part number for our 1NZ from ACL and Clevite. if anyone here manages to do so appreciate if you could share. alright, i'll try to snap pictures of the crank as well, was thinking to keep the stock crank pulley though. __________________ 454 whp, 1.7 bar boost, pump gas, water/meth. 501 whp, 2.2 bar boost, pump gas + avgas, no water/meth. www.viosturbo.com - World's first 500 WHP 1NZ-FE

08-10-2009, 01:20 PM	#4
CASTREX Who said Yaris was slow? View User's Garage Drives: Yaris T-Sport 2008 Join Date: Nov 2006 Location: Costa Rica Posts: 1,287	Safely means: "You don't blow your engine when you are doing a WOT pass" It doesn't mean that it will last the same as if you let your engine stock. If a STOCK Yaris engine was supposed to get 350,000 miles before a rebuild... a boosted Yaris will get there sooner. How sooner? There is no straight answer. Depends on the maintenance, and mostly in how you drive your car. Upgraded internals such as forged pistons and rods are not intended to increase longevity... Those are made to increase the engines ability to handle higher boost levels. Usually when you built an engine is because is going take some abuse... Longevity is not a major concern for people who spend the big bucks building an engine. Realiability, longevity = STOCK can't beat that.

02-05-2010, 09:46 AM	#8
Yoda Drives: 2008 Black Sedan Join Date: Oct 2008 Location: FL Posts: 966	hmmmm

02-05-2010, 11:43 AM	#10
Yaris Hilton Half a Bubble Off Plumb Drives: 2009 Yaris Sedan Join Date: Mar 2009 Location: Bristol, Tennessee, USA Posts: 1,593	There's some pitting there that shouldn't be.

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