Incorrect 2.25 Bearings?

**Longboard300** · 9th April 2023, 01:07 PM

Hi all,

In the process of rebuilding a 1961 SII 109 2.25 petrol engine.
I ordered new main and conrod bearings but they don't seem to fit, the notch is on the incorrect side. Have I been sent the wrong bearings or do early 2.25's have a different bearing that needs to be ordered?

Thanks.

**B.S.F.** · 9th April 2023, 02:33 PM

When dealing with engines it's best to quote engine numbers.
.W.

**Longboard300** · 9th April 2023, 03:58 PM

Originally Posted by B.S.F.

When dealing with engines it's best to quote engine numbers.
.W.

Ah, thanks for that. Based on the engine numbers it is a series 2 engine, not 2a. i never realised there was a difference.
Do you know where to order early 2.25 bearings from?

**drfish** · 9th April 2023, 06:09 PM

They are getting a bit hard to get now as those engine variants were only made for a few years. Best place to try would be Blanchards or Craddocks in the UK for these. They may be carrying some NOS still.

Best check your crankshaft end float and order your thrust washers at the same time, as they’re equally hard to find. Cheers, Matt

**B.S.F.** · 9th April 2023, 06:20 PM

Cox & Turner in the UK have got a good reputation. I have no personal experience.
.W.

Turner Engineeringhttps://www.turnerengineering.co.uk › land-rover-2

**flyboy** · 10th May 2023, 03:02 PM

I had the same issue with my 1959.
I spoke to Richard Turner from Turner Engineering in the UK. He advised me to do what they do which is to fit bearings from a TD5. The tang will be on the wrong side so you have to file that off. There will also be no oil hole, but that is for the oil that sprays onto the camshaft which was redundant and later deleted.

**flyboy** · 10th May 2023, 03:04 PM

Dear Marcus
The bearings shell is held in place by the fact that conrod housing is bigger than the outside diameter of the bearings. There is no need to drill an oil hole, this feature was discontinued at the time of the 2.5 engine. The 2.5 Petrol runs absolutely fine without this oil hole.

Guess the centre of the rod and fit the slightly wider bearing on the upper side. Yes the bearings are narrower but intended for a diesel engine which is substantially more powerful with higher load dynamics. In simple terms the bearings for the older engines were somewhat over engineered.

**gromit** · 11th May 2023, 06:40 AM

Originally Posted by flyboy

The bearings shell is held in place by the fact that conrod housing is bigger than the outside diameter of the bearings. There is no need to drill an oil hole, this feature was discontinued at the time of the 2.5 engine. The 2.5 Petrol runs absolutely fine without this oil hole.

I think they meant that the conrod housing is smaller than the OD of the shell bearings.

It seems that some modern engines no longer have the locating tangs, I've read of problems with TDV6 motors spinning shells !
I'm surprised that the squirter was only to lubricate the cam, on older engines I was under the impression it was also to help lubricate the bore & cool the piston.
Just checked some NOS conrods and the squirter was only on one side, the other side has the boss but it isn't drilled so maybe as suggested just to lubricate the cam.

With older engines as parts become harder to get you have to make do.
I did find someone who lists the early shell bearings but they were 'to order' and very, very expensive.

Colin

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