Hi guys I have just replaced the engine in my range rover with a land rover engine and have just found out that the LR engine is about 50 HP less , I was wondering if anyone knew how they reduce it, im thinking either carb or inlet manifold , I think the compression is the same , apparently they reduced it to make the RR sell more . any ideas . thanks
mgmad,
Jun 12, 6:59am
Which Land Rover, which Range Rover!
sterid01,
Jun 12, 7:45am
Range rover - 81 Land Rover defender - 83 Sorry
mgmad,
Jun 12, 8:05am
A quick wiki suggests, presuming both are V8s, that the defender used a low CR 3.5 V8 at about 113 bhp, compared to the 135 bhp of the RR. Not quite 50 bhp, but seems quite a lot of power to lose just from a drop in CR to me.
msi,
Jun 12, 12:59pm
CR stamped on the block next to dip-stick
mram,
Jun 12, 6:57pm
Land Rover stage 1 and early one ten were 8.35:1 compression, They had restrictor plates in the manifold to reduce the horsepower, reason being rover felt the V8 was too fast with a vehicle(stage1) that still had drums all round
sterid01,
Jun 12, 8:41pm
Both engines have 8.31:1 ratio , mram can these be removed or do I need to get my manifold from the RR engine back .
sterid01,
Jun 13, 12:03am
also is the restrictor plate just in the inlet manifold or both . cheers
elect70,
Jun 13, 1:01am
Swapmanifolds & carbs
msi,
Jun 13, 6:48am
Unbolt both carbs and you will see them just pull them out
westygirl1,
Jun 13, 7:28am
must note this for future ref. in process of rebuilding engine from stage 1. possibly to be put into a forward control. might have to do this
gofer0007,
Jun 14, 12:42am
I did RR heads and stage one cam on my 3.8 V8 Disco and hops along so much better.Bucket loads of fun for towing the V8 off roader on the trailer.
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