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#2472974 - 12/26/11 07:19 AM List of Non-Interference cars and engines, gauges
45ACP Offline


Registered: 04/03/11
Posts: 1271
Loc: Dallas Texas
Just read about a Non-Interference engine, and how it can survive a timing belt snap vs an Interference engine, which most are, and cant.

Can anyone name all the Non-Interference cars/engines they can think of? I rather like that benefit.

Also, for a separate list, can anyone name all the cars and cars/trucks/engines that come with a factory Oil pressure gauge, instead of having to figure out weird ways to go add one and ask the shop what they want to do? Thanks!

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#2472980 - 12/26/11 07:34 AM Re: List of Non-Interference cars and engines, gauges [Re: 45ACP]
bullwinkle Offline


Registered: 10/09/04
Posts: 4312
Loc: Cincinnati, OH, USA
Gates' website and catalog used to have a list, that's where I would look. Many, if not most, vehicles with an oil pressure gauge aren't very accurate anyway.
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#2472986 - 12/26/11 07:44 AM Re: List of Non-Interference cars and engines, gauges [Re: 45ACP]
Astro14 Offline


Registered: 10/10/10
Posts: 4849
Loc: Virginia Beach
Generally, any modern engine will be an interference engine. The interference is the result of higher compression, longer valve travel, and more valve overlap...all of which lead to better combustion, efficiency and MPG....
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#2472993 - 12/26/11 07:56 AM Re: List of Non-Interference cars and engines, gauges [Re: bullwinkle]
JTK Offline


Registered: 08/14/03
Posts: 7522
Loc: Buffalo, NY
+1 on the Gates look-up chart. The last non-crasher belt drives I know of were Ford Ranger 2.2/2.5's. There's not many non-interference engines built in the last decade.

I couldn't tell you the last time I saw an oil pressure gauge stock in a car. Trucks/SUVs, yes.

Joel
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#2472995 - 12/26/11 07:57 AM Re: List of Non-Interference cars and engines, gauges [Re: 45ACP]
rslifkin Offline


Registered: 06/27/10
Posts: 2272
Loc: Stamford, CT / Rochester, NY
I'll agree with factory OP gauges being pretty useless, other than to point out major issues. At hot idle, my actual pressure is in the low 20s, gauge reads 30. Revved up hot, or just off-idle on a cold start, it has about 60psi, but the gauge never goes over 45. I've seen other Jeeps with 4.0s where the gauges seem a bit more accurate (will move up to 55 - 60), but I've never checked one of those against a mech gauge.
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#2472999 - 12/26/11 08:01 AM Re: List of Non-Interference cars and engines, gauges [Re: rslifkin]
CLeming Offline


Registered: 12/10/11
Posts: 40
Loc: UT
Here is the link to the Gates interference engine chart and recommended change interval in pdf format.

http://www.gates.com/common/downloads/files/Gates/TimingBeltReplacementGuide.pdf

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#2473000 - 12/26/11 08:02 AM Re: List of Non-Interference cars and engines, gauges [Re: 45ACP]
Dan55 Offline


Registered: 06/07/08
Posts: 711
Loc: jersey
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#2473002 - 12/26/11 08:02 AM Re: List of Non-Interference cars and engines, gauges [Re: rslifkin]
45ACP Offline


Registered: 04/03/11
Posts: 1271
Loc: Dallas Texas
Originally Posted By: rslifkin
I'll agree with factory OP gauges being pretty useless, other than to point out major issues. At hot idle, my actual pressure is in the low 20s, gauge reads 30. Revved up hot, or just off-idle on a cold start, it has about 60psi, but the gauge never goes over 45. I've seen other Jeeps with 4.0s where the gauges seem a bit more accurate (will move up to 55 - 60), but I've never checked one of those against a mech gauge.


Appreciated. But if you put in a thinner oil like a 5W-20 to see what it would do, would the gauge change?

Or would you never do that... kicking around ideas here.

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#2473015 - 12/26/11 08:23 AM Re: List of Non-Interference cars and engines, gauges [Re: 45ACP]
bullwinkle Offline


Registered: 10/09/04
Posts: 4312
Loc: Cincinnati, OH, USA
The only factory OP gauge that I've seen make sense is the one in my '93 GMC, it actually registers the bypass pressure of 60-ish PSI with cold dino SAE 30, then will drop to 20-25 PSI at a hot idle. The others, especially all the Ford ones, just show some random meaningless level between L and H that never seems to change when the engine is running-might as well be an idiot light!
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#2473027 - 12/26/11 08:40 AM Re: List of Non-Interference cars and engines, gauges [Re: 45ACP]
Boomer Offline


Registered: 09/19/08
Posts: 1700
Loc: Pennsylvania
Some vehicles, like my 2007 Frontier, have an oil pressure gauge in the dash but it is just another version of an idiot light. As long as the pressure is within some predetermined value range, the needle stays right in the middle of the gauge. Apparently, from what I have read, Nissan did this after getting complaints that the pressure was changing during engine warmup, etc. Just shows that many are not able to understand the simple dynamics of engine performance.
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#2473040 - 12/26/11 08:52 AM Re: List of Non-Interference cars and engines, gauges [Re: 45ACP]
45ACP Offline


Registered: 04/03/11
Posts: 1271
Loc: Dallas Texas
Im thinking of a 2002-2006 or possibly 2007 "Classic appearnce" GMC Yukon XL Denali with either the 6.0 or 6.2L engine, and im wondering how the pressure gauge is on that. Or, a 2007 6.2L New one.. and the OP gauge on it.

I have seen some people with 2002 Tahoes and their oil pressure gauge "Failed High." 120PSI!!

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#2473054 - 12/26/11 09:04 AM Re: List of Non-Interference cars and engines, gauges [Re: 45ACP]
zyxelenator Offline


Registered: 01/24/11
Posts: 1340
Loc: Louisville,KY
Toyota 2JZGE is non interference if it doesn't have vvti
Toyota 1MZFE same. Those I know so sure.
45ACP, check Beast Camry thread, I answered you questions.
_________________________
99 Camry V6, 5 speed M/T
148k miles.Current fill:5w-30 G-oil,OVERSIZE P1, some Kreen and Ceratec added.
Lubro Moly 75w90 synthetic hypoid oil,with Moly

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#2473077 - 12/26/11 09:39 AM Re: List of Non-Interference cars and engines, gauges [Re: 45ACP]
JHZR2 Offline



Registered: 12/14/02
Posts: 34685
Loc: New Jersey
My MBs all have factory gauges, they just peg out after they reach a certain pressure, but that's ok with me.

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#2473169 - 12/26/11 11:49 AM Re: List of Non-Interference cars and engines, gauges [Re: 45ACP]
Donald Offline


Registered: 03/21/04
Posts: 14027
Loc: Upstate NY
I will go one step further for the timing belt. If it has a belt I will pass. I want a chain.

But seeing the engine listed as a non-interference engine should not change the maint. schedule for the timing belt.

I think dash oil pressure gauges are MUCH better than an idiot light, but not as good as a mechanical gauge. Just assume they are +/- 10 lbs. That should be accurate enough for most people. You have a street car, not a race car.
_________________________
2001 Jeep Grand Cherokee Laredo 4.0 - PP & M1
1999 Dodge Ram 2500 w/Cummins - Rotella T6 & M1
Amsoil ATF in both vehicles & Magnefine filter.

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#2473177 - 12/26/11 11:55 AM Re: List of Non-Interference cars and engines, gauges [Re: 45ACP]
Quest Offline


Registered: 12/19/04
Posts: 6607
Loc: beaver land EH?
My take is belt come first, then chain would be my second choice.

(*BTW: I get to inspect/service all seals, idler tensioner bearings, water pumps, etc. whenever I perform a belt change, not so much on the chain tensioner guide for chain type*)

Q.
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