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Post by puffernutter on May 7, 2013 20:46:15 GMT
I have a Rover P4 110 with a siezed 3 litre straight 6. I have been offered a P5 3 litre engine.
Were there many differences between a late P4 and the P5s, or is it a straight swap?
Cheers
Peter
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theroveringmember
Rover Fanatic
P5B Saloon - P4 110 - P6B x2 - 2200TC - 2000TC (S1) 2000SC........How Many Is Too Many?
Posts: 446
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Post by theroveringmember on May 9, 2013 5:44:50 GMT
So your 110 has a 3 litre engine already or the original 2600? I'm assuming it'll be an original 110 engine you've got or you wouldn't be asking about the conversion. As long as it's not a really early 3 litre which won't have the Weslake head as the 110 does, I think they're basically the same engine apart from the cc. I'm not sure about engine mount positions & the like. The cars were built concurrently so Rover would have kept production differences to a minimum to lessen costs. I would imagine it's a conversion that has been done at some point.....& a little trawl through the P4 Guild forum shows that this is indeed the case. Not sure if you can view these if you're not a P4 Forum member: www.roverp4dg.org.uk/phpBB2/viewtopic.php?t=1752&highlight=litrewww.roverp4dg.org.uk/phpBB2/viewtopic.php?t=79&highlight=litreNottingham Phil knows of such conversions, you need the 110 inlet manifold/air filter on the Weslake 3 litre engine by the looks of things. |
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Post by Phil Nottingham on May 9, 2013 18:05:15 GMT
The Mk2 & Mk3 3 Litre engines will fit almost straight in if as said you use the inlet manifold from the 110 with the 3 Litre HD8 carb.
The Mk1 3 Litre with combined head/manifold will fit but some mods may be required to o/s inner wing to give clearance.
In all cases the 3 Litre engine must be a manual gearbox version as auto engines (ie the crankshaft) were different.
Quite a number have been so converted and it gives a useful increase in power especially on older 75/90's but its not worth using a Mk1 3 Litre engine in a 110 really as they were lower in power.
If the 3 litre engine is a Mk2 auto version I may interested in it
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Post by puffernutter on May 11, 2013 21:11:40 GMT
Thanks for the detailed explanation. Looks like I should have thought this through first and not "assumed" - with the usual dire consequences!
I've had a look at the engine, it is dark, so I can't see much. The only identifying make I can find is "550070" on the block.
Does that mean anything to anybody?
It was a manual gearbox (with overdrive) that came with the engine.
So is it the case that I will be better trying to sort out my P4 engine and not try and replace it with a P5 engine? (Some reason I thought the P4 was a 3 litre - wrong again!)
Cheers
Peter
Dispirited and confused of Trowbridge!
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Post by puffernutter on May 12, 2013 8:31:56 GMT
OK, so that number was probably the part number for the block casting! (I did say it was dark!)
I have now found - 542350 G(or 6?)1887 WYF
Does that make any more sense? Does that narrow it down to a type of engine and rough year?
Cheers
Peter
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Post by Phil Nottingham on May 12, 2013 11:20:48 GMT
Not much!
Its good start that its a manual/overdrive engine
Has it got combined head/manifold rather than the 110's bolt on affair?
The engine number will give year/model its a number like 770-02948
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Post by puffernutter on May 13, 2013 20:39:29 GMT
Phil,
I can't find anything in that format - where is it likely to be on the block?
It does have an identical inlet manifold arrangement to the 110 P4 engine.
I've also found another number on the rocker-box cover - 12 2 66 (is that a date of manufacture?)
Cheers
Peter
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Post by puffernutter on May 23, 2013 21:09:20 GMT
I have a number of pictures of the engine - how do I post them here?
Cheers
Peter
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Post by Phil Nottingham on May 23, 2013 21:51:20 GMT
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Post by puffernutter on May 25, 2013 19:46:28 GMT
Phil, Sorry, manic at the moment, upgraded the PC and only just got FTP working again :-)     I have set up so you can view it in this forum. AdminCheers Peter |
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Post by Phil Nottingham on May 25, 2013 20:37:55 GMT
It should fit easily - the engine number is on the block behind the bent hose from the pump to the heater 3rd Photo.
Look for this as its important.
You will need to fit the 110 inlet manifold as this is narrower depthwise
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Post by puffernutter on May 27, 2013 18:23:44 GMT
Phil,
I had a good look in that are. All there is under the rust is "217" - does that make sense?
Cheers
Peter
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Post by Phil Nottingham on May 27, 2013 19:11:53 GMT
No - but its a Mk3 3 litre so will fit without too much bother if inlet manifold and engine mounts changed.
Tappet cover looks bad - engine should be stripped?
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Post by timhanna on Nov 26, 2021 2:31:18 GMT
I have a very late 95 manual gearbox car with no engine. I also have a good 3 liter with Weslake head that was hooked up to an auto. The flange on the end of the crank is obviously of a larger diameter to the locating ring on the 95 flywheel I have and the bolt pattern is different. My question for the particularly clever bloke I need to help is can I machine out the flywheel to fit over the flange and drill new bolt holes using a 3 litre flywheel, which I also have, as a template?
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Post by Phil Nottingham on Nov 26, 2021 5:52:30 GMT
It depends on the crankshaft. If an auto from a Mk1 or Mk2 the spigot bearing hole will need enlarging at least.
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