Range Rover 17D - detuned?
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Range Rover 17D - detuned?
How do! I have just aquired a RR 17D ( yes has the manifold air injection ) from a very nice couple on the Wirral ( hiya Gary - if you are a visitor/member ). Anyway the lump checks out pretty well ( although i'm planning a strip down anyway ). The question is - i remember the RR v8's being lower powered - 140 bhp ish i think. How was this lower state of tune 'achieved' ? Was it carbs,exhaust, cam or all three? The 'Pulsair' is not an issue as i have some SD1 cast manifolds in my 'parts dept' I've decided on installing the RRv8 instead of the p5b engine for ease of use and parts but i will also rebuild the p5b lump. I fancy something out of the 'norm' for carbs - has anyone got any thoughts or what has been used before? ... John
Re: Range Rover 17D - detuned?
There is a fourth factor!, compression ratio. This is set by the pistons, but should be stamped on the block above the engine number.
Chris.
Chris.
--
Series IIA 4.6 V8
R/R P38 4.6 V8
R/R L405 4.4 SDV8
Series IIA 4.6 V8
R/R P38 4.6 V8
R/R L405 4.4 SDV8
Re: Range Rover 17D - detuned?
Hi Chris - I'd already checked the compression ratio and it's 9.35 : 1. Is it likely that carb jetting or reduced choke diameter was the way that they were detuned .... i wonder..
Re: Range Rover 17D - detuned?
I think that is about the max for a carb Rangie engine. The EFi version of the same was 165BHP.
One has to assume it's a combination of cam, exhaust, ignition timing.
The EFi version had twin outlet manifolds which must have helped over the single outlet manifolds used on the carb engines.
Chris.
One has to assume it's a combination of cam, exhaust, ignition timing.
The EFi version had twin outlet manifolds which must have helped over the single outlet manifolds used on the carb engines.
Chris.
--
Series IIA 4.6 V8
R/R P38 4.6 V8
R/R L405 4.4 SDV8
Series IIA 4.6 V8
R/R P38 4.6 V8
R/R L405 4.4 SDV8