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Aug 24th, 2023
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Joined: Feb 2009
Posts: 157
L - Learner Plates On
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OP
L - Learner Plates On
Joined: Feb 2009
Posts: 157 |
Hi guys, help needed again. I have just swapped my 4/4 for a +4 and would like to know the recommended pressure for its tyres. The car is fitted with Yokohama 205/60 R 15 tyres. Also whats the corect oil for the Duratec 2 litre engine.
Addicted to Morgans. 44 years and still not cured.
1947 series 1 4/4
1992 4/4
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Joined: Jul 2007
Posts: 365 Likes: 1
Learner Plates Off!
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Learner Plates Off!
Joined: Jul 2007
Posts: 365 Likes: 1 |
My handbook for the Classic range gives 22psi as cold inflation pressure and does not differentiate by model or tyre size.(section 13.1 page 66)
Andy
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Joined: May 2009
Posts: 2,190
South Wales Correspondent Talk Morgan Expert
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South Wales Correspondent Talk Morgan Expert
Joined: May 2009
Posts: 2,190 |
My handbook for the Classic range gives 22psi as cold inflation pressure and does not differentiate by model or tyre size.(section 13.1 page 66)
Andy It can depend upon the tyres you have and how flexible the side walls are/ how sticky the compound but most people run 21/22 psi for normal condtions. I run 25 Psi with Yokos but they are fairly 'sticky' tyres and I like to have turn in oversteer, so a very hard back end breaking away helps this G
GLLHG
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Joined: Aug 2010
Posts: 125
L - Learner Plates On
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L - Learner Plates On
Joined: Aug 2010
Posts: 125 |
Hi Jeepy, I have the same car as you......
TYRES- for me there is a balance between comfort and handling . I would suggest a MINIMUM of 22psi (and check regularly as on Morgans they do deflate over time), but find handling improves when inflated to 26psi, but you do feel the bumps! Try within that range for what suits you, also taking into account tyre condition and type of roads on which you do most of your driving.
OIL- just had mine serviced at the factory and they used Synth 5W-40 in my duratec 2L.
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Joined: Jun 2008
Posts: 1,597
Talk Morgan Enthusiast
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Talk Morgan Enthusiast
Joined: Jun 2008
Posts: 1,597 |
The book say 22psi for all, but on the bigger tyres I use 26psi. Turning the wheel at slow speeds is much easier with a few extra psi and probably less wearing on the tyres and mechanicals.
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Joined: Jul 2007
Posts: 26,748 Likes: 419
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jul 2007
Posts: 26,748 Likes: 419 |
I run 25 psi on my 97 +4
Both to get over the speed bumps in the road but also as they do deflate over time. It gives me a buffer before I hit the 22 psi minimum at which point the car scrapes the bracket protecting the gearbox as I come up my steep drive into the garage.
JohnV6
2022 CX Plus Four
2025 MG ZS EV aka Trigger
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Joined: Oct 2009
Posts: 83
Just Getting Started
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Just Getting Started
Joined: Oct 2009
Posts: 83 |
Hi Jeepy, I have the same car and the pressure I keep is 18bar instead of 15 bar as indicated and I find this very confortable, with good grip and perfect consumption.
ciao
fabrizio
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Joined: Jul 2007
Posts: 26,748 Likes: 419
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jul 2007
Posts: 26,748 Likes: 419 |
18 bar ? Surely you mean 1.8 bar = 26 psig and not 260 psig. Tyres go pop at that pressure. 
JohnV6
2022 CX Plus Four
2025 MG ZS EV aka Trigger
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Joined: Oct 2009
Posts: 83
Just Getting Started
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Just Getting Started
Joined: Oct 2009
Posts: 83 |
right John, I forgot a dot: The pressure is 1.8.
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Joined: Jul 2007
Posts: 26,748 Likes: 419
Member of the Inner Circle
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Member of the Inner Circle
Joined: Jul 2007
Posts: 26,748 Likes: 419 |
Hey no worries. It is the engineer in me.
JohnV6
2022 CX Plus Four
2025 MG ZS EV aka Trigger
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