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lordpecan



Member Since: 06 Feb 2022
Location: London
Posts: 6
United Kingdom 1987 Defender 90 V8 Petrol CSW Alpine White
Land Rover 110 2.25 Petrol issues
Hi,

I have had my 110 2.25 rebuilt recently with an ACR cam fitted.

The vehicle drivers very well upto 55mph (Much better than before).

However on the motorway is struggles above 55mph, with power loss that only seems to be cured by using the choke (+10%).

Any ideas what this maybe?

Many thanks

R
Post #1065120 9th Apr 2025 2:14pm
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Mo Murphy



Member Since: 01 Jun 2008
Location: Letchworth Garden City, Herts
Posts: 2362
United Kingdom 1984 Defender 90 BMW M57 3.0 Diesel HT Auto Pennine Grey
What are your expectations from it ?
Mo The Land Rover 90 - Many are called, few are chosen.

50 Shades of Pennine Grey
Post #1065149 9th Apr 2025 7:14pm
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lordpecan



Member Since: 06 Feb 2022
Location: London
Posts: 6
United Kingdom 1987 Defender 90 V8 Petrol CSW Alpine White
Hi,

I am hoping it will get to at least 65mph without feeling like it will want to blow up Wink

I do not understand why it needs choke to get extra power, it is a fuel starvation issue?

Thanks

R
Post #1065152 9th Apr 2025 7:27pm
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Roverdrive



Member Since: 11 Aug 2024
Location: Wirral
Posts: 25
United Kingdom 
I would suggest contacting ACR to see if they have recommended jet sizes for use with their camshafts.

I had a twin choke weber on my 2 1/4, with non standard cam and 4 branch exhaust. I put it on a rolling road to get the fuelling sorted. From memory a larger main jet was needed as it was leaning out at the top end.

Anything else is just guesswork. Mike
110 CSW
Post #1065297 11th Apr 2025 4:26pm
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lordpecan



Member Since: 06 Feb 2022
Location: London
Posts: 6
United Kingdom 1987 Defender 90 V8 Petrol CSW Alpine White
Thanks, I spoke to Roland at ACR who said it is most liked a blocked jet. A higher performance jet is available, which I might get. Cheers R
Post #1065430 13th Apr 2025 9:15pm
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MarkBrown



Member Since: 03 Oct 2022
Location: Mid Wales
Posts: 551
Wales 1983 Defender 110 Other HT Auto Keswick Green
I remember my 110 2.25 would do about 70, eventually, with 75 ish on a long down hill. Everything was standard and low mileage at around 45k. Perhaps check the valve timing? 1983 110 automatic OM606
Post #1065432 13th Apr 2025 9:58pm
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