 Lower tire dimension and wider tires = Oil Temp goes up easily, From 185x65x15 to 205x50x15 tires |
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| ndfrigi |
 Mar 11 2015, 04:47 PM
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#1
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Advanced Member  Group: Members Posts: 2,933 Joined: 21-August 11 From: Orange County Member No.: 13,474 Region Association: Southern California 
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Finally completed my 5 lug conversion. But why is my oil temp goes up faster than before. Is it because I have a lower diameter and wider tires? Or just a coincidence that after my 5 lug conversion there was another issue that makes my oil goes up faster than before. On the same weather condition around 65 degrees F, I used to drive my car for about 3 miles around city which my oil temp does not goes up immediately and I only get around 180 degrees but today I drove it and my temp went to 200.
Any experienced you have had or anyone can help me figure out? Thanks again my fellow teeners and God Bless!   |
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Replies(1 - 19)
| 914_teener |
Mar 11 2015, 04:53 PM
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#2
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914 Guru Group: Members Posts: 5,204 Joined: 31-August 08 From: So. Cal Member No.: 9,489 Region Association: Southern California |
Did you remove the deflector plates on the firewall underneath the car?
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| ndfrigi |
Mar 11 2015, 04:56 PM
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#3
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Advanced Member Group: Members Posts: 2,933 Joined: 21-August 11 From: Orange County Member No.: 13,474 Region Association: Southern California
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QUOTE(914_teener @ Mar 11 2015, 03:53 PM)  Did you remove the deflector plates on the firewall underneath the car? No sir! No other changes lately except the 4 to 5 lug wheels conversion. |
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| 914_teener |
Mar 11 2015, 04:59 PM
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#4
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914 Guru Group: Members Posts: 5,204 Joined: 31-August 08 From: So. Cal Member No.: 9,489 Region Association: Southern California |
Car looks cool! Who cares!
Why do those oil temps concern you? Also could be several things......check the oil cooler make sure some garbage isn't in there of some obstructions. Also check your thermostat cable. |
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| ndfrigi |
Mar 11 2015, 05:13 PM
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#5
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Advanced Member Group: Members Posts: 2,933 Joined: 21-August 11 From: Orange County Member No.: 13,474 Region Association: Southern California
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QUOTE(914_teener @ Mar 11 2015, 03:59 PM) Car looks cool! Who cares! Why do those oil temps concern you? Also could be several things......check the oil cooler make sure some garbage isn't in there of some obstructions. Also check your thermostat cable. My concern is, since I only drove it around 3 miles and my temp was already 200 plus, I was thinking I might be getting higher temp or can probably gets overheat if I drive it longer. My usual temp before wheel conversion with a longer period of time only around 220 max. I got the car last 2011 and I haven't installed or run it with thermostat here in SoCal. |
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| Old Yella |
Mar 11 2015, 05:19 PM
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#6
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Old Yella Group: Members Posts: 158 Joined: 2-July 13 From: Canberra Australia Member No.: 16,086 Region Association: Southwest Region |
Don't know about your temp but I'm an advocate for BBB's. That's Big Beautiful Bumpers. I like all 914's but I usually like what other people don't. Sweet ride.
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| Larmo63 |
Mar 11 2015, 05:21 PM
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#7
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Advanced Member Group: Members Posts: 4,264 Joined: 3-March 14 From: San Clemente, Ca Member No.: 17,068 Region Association: Southern California |
The wheels look GREAT, Noel!!!!!!!!!
Good job! |
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| ndfrigi |
Mar 11 2015, 05:29 PM
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#8
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Advanced Member Group: Members Posts: 2,933 Joined: 21-August 11 From: Orange County Member No.: 13,474 Region Association: Southern California
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QUOTE(Larmo63 @ Mar 11 2015, 04:21 PM) The wheels look GREAT, Noel!!!!!!!!! Good job! Thanks "Old Yella" and Lawrence "Larmo63"! Yes for the looks it is better but for oil temp? Not happy with it! Maybe I will drive it tomorrow for a longer period and see what will happen on the temp. Sir Lawrence, what tire size are you planning to use after you install your 5 lug conversion? Right now, it seems i have more space in between outside tire and fender lip. I think I may be able to fit 205x55 or 205x60. |
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| Larmo63 |
Mar 11 2015, 05:59 PM
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#9
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Advanced Member Group: Members Posts: 4,264 Joined: 3-March 14 From: San Clemente, Ca Member No.: 17,068 Region Association: Southern California |
I'm running 205/65 x 15 Yokohamas.
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| Cairo94507 |
Mar 11 2015, 08:36 PM
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#10
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Michael Group: Members Posts: 9,815 Joined: 1-November 08 From: Auburn, CA Member No.: 9,712 Region Association: Northern California
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5 lug conversion and wheels (IMG:style_emoticons/default/aktion035.gif) Looks very nice.
Personally, I would swap the BBB's for early ones. I do not see any possible correlation between the tire swap and oil temperatures going up. |
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| Mike Bellis |
Mar 11 2015, 08:46 PM
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#11
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Resident Electrician Group: Members Posts: 8,345 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None 
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Your car is lower and you have less air flow to turbulate under the car into the fan. If you are driving the same speed as before, your RPM's are now higher. The width of the tire will have negligible/nil effect on temp.
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| 914_teener |
Mar 11 2015, 09:13 PM
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#12
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914 Guru Group: Members Posts: 5,204 Joined: 31-August 08 From: So. Cal Member No.: 9,489 Region Association: Southern California |
Nah Mike.......
The flaps are supposed to reduce turbulence and create dead air to avoid fan cavatation. He said they are there. You didn't change anything else? So do you know for sure that the flaps are installed right or close in the full open position? You didn't leave a small rag somewhere by mistake? |
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| Krieger |
Mar 11 2015, 10:15 PM
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#13
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Advanced Member Group: Members Posts: 4,723 Joined: 24-May 04 From: Santa Rosa CA Member No.: 2,104 Region Association: None
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Your engine is spinning significantly faster to go the same speed.
Stock tire diameter is 25.7" 185/65/15 is 24.5" 205/50/15 is 23.07" The radius (half the diameter) of the tire is what is relevant. You went from 1/2" shorter than stock to a full 1.3" shorter. This is awesome when autocrossing. For daily street driving its kind of a drag buzzing along at freeway speeds and 3500 rpm. The owners manual shows that with stock tires @ 65 mph is about 2800rpm. Many of us go to the 16" rims so we can keep a low profile tire. You could use a taller tire like 205/60/15 to get that height back to 24.7" 200* is not a bad temp at all. Hopefully on a hot day you stay cool. Check tire rack for tire diameters. The diameters are all slightly different, but not to far off. Check out Tire Rack for exact specs on available tires. Car looks great. I love BBB! |
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| Mike Bellis |
Mar 11 2015, 10:19 PM
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#14
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Resident Electrician Group: Members Posts: 8,345 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None
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QUOTE(914_teener @ Mar 11 2015, 07:13 PM) Nah Mike....... The flaps are supposed to reduce turbulence and create dead air to avoid fan cavatation. He said they are there. The flaps are a vortex generator to aid in air flow to the fan. Less ride height means less air flow. With that said, it's still s stretch. tire changes should not effect the temp unless the rpm at a given speed is different |
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| 914_teener |
Mar 11 2015, 10:31 PM
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#15
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914 Guru Group: Members Posts: 5,204 Joined: 31-August 08 From: So. Cal Member No.: 9,489 Region Association: Southern California |
QUOTE(Mike Bellis @ Mar 11 2015, 08:19 PM) QUOTE(914_teener @ Mar 11 2015, 07:13 PM) Nah Mike....... The flaps are supposed to reduce turbulence and create dead air to avoid fan cavatation. He said they are there. The flaps are a vortex generator to aid in air flow to the fan. Less ride height means less air flow. With that said, it's still s stretch. tire changes should not effect the temp unless the rpm at a given speed is different I respectfully disagree and will bet a beer on it when I see you WCR. I don't think that is the intention of the flaps. I'd never argue anything electrical with you though.....I know enough about that to be dangerous. I think Kriegers explanation is more reasonable and don't think the oil temps are a problem unless it starts to spike. Head temps are more relevant anyway....but that's been argued here before. |
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| colingreene |
Mar 11 2015, 10:34 PM
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#16
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Senior Member Group: Members Posts: 729 Joined: 17-October 13 From: Southern California Member No.: 16,526 Region Association: Southern California |
You really should put a T stat in.
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| bandjoey |
Mar 11 2015, 10:41 PM
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#17
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bandjoey Group: Members Posts: 4,926 Joined: 26-September 07 From: Bedford Tx Member No.: 8,156 Region Association: Southwest Region |
Flaps are there to create air flow up and through the engine. Somewhere here there's an engineering air flow study complete with charts and pretty pictures. Flaps create turbulence and cooling for the motor.
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| bandjoey |
Mar 11 2015, 10:45 PM
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#18
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bandjoey Group: Members Posts: 4,926 Joined: 26-September 07 From: Bedford Tx Member No.: 8,156 Region Association: Southwest Region |
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| altitude411 |
Mar 11 2015, 10:52 PM
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#19
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I drove my 6 into a tree Group: Members Posts: 1,306 Joined: 21-September 14 From: montana Member No.: 17,932 Region Association: Rocky Mountains
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* edit
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| 914_teener |
Mar 11 2015, 11:00 PM
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#20
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914 Guru Group: Members Posts: 5,204 Joined: 31-August 08 From: So. Cal Member No.: 9,489 Region Association: Southern California |
QUOTE(bandjoey @ Mar 11 2015, 08:45 PM) Your'e right those are purty but....they look to be laminar air flow studies to design a an efficient wing for a 914. Interesting though. I'm hoping to get schooled here without highj-acking the post. |
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