Burtie2904 · Feb 26, 2015

Hello all,
So I haven't been on LZ for a long time as I have been busy with boarding school, but I have got a new garage for my beast and a been fiddling around with interior work.
So as the title suggests I am not really very happy with the power being produced my 3.5.
And yes I know they never really do produce much power but I just want it to produce more than it currently does.
I was wondering what they best ways of improving the power, at the moment they only mod in the engine bay is electric fans, otherwise completely stock 1988 3.5 v8. So far I know that a new cam would help, as its got 94,000 on the clock and hasn't been changed. Also EFI would greatly help and I will defiantly be doing that as it has other benefits too.
I wont be doing any modifications immediately but I am planning for my gap year and what I will be doing to my Landy.
Info about the car:
1988 110,
94,000 miles
Stock engine,
As far as I know no major part replacement
and it is tuned (had it done quite recently)

Burtie

cooltide · Feb 26, 2015

If it is oe 110v8, it will be low compression 8.13:1 (stamped on block below n/s exhaust header) and rather pedestrian. It would be OK at 10:1 with 95ron

Burtie2904 · Feb 27, 2015

Thanks, I will look into it and see what mine is at asap

waldamar · Feb 28, 2015

What do you want? 0 - 60 in the blink of an eye? Top end of 120+? If yes to both sell the defender and buy a 3 litre X Type, 4x4 and fast [and VERY cheap]...................... Your standard V8 is perfectly suited to the vehicle it's in, lots of low down grunt - stick it in low, lock your diff and pull down a house! Loads of fun! No matter how much you spend, or how much POWER!!!!!!! you manage to get out of it you'll still be pushing a big brick along the road - lower MPG will be the main result..................... Go LPG and enjoy what you've got just cheaper

zen · Feb 28, 2015

waldamar said:
What do you want? 0 - 60 in the blink of an eye? Top end of 120+? If yes to both sell the defender and buy a 3 litre X Type, 4x4 and fast [and VERY cheap]...................... Your standard V8 is perfectly suited to the vehicle it's in, lots of low down grunt - stick it in low, lock your diff and pull down a house! Loads of fun! No matter how much you spend, or how much POWER!!!!!!! you manage to get out of it you'll still be pushing a big brick along the road - lower MPG will be the main result..................... Go LPG and enjoy what you've got just cheaper

soo boring..and wrong .(except for lpg..i love lpg)

and well you must be in your 70's...and not a student..(no offense, but not helpful to poster)

you have it covered..higher compression, new cam,lifters rockers and rocker arms, new timing chain..
efi and prehaps some decent headers.that will raise it from your sub 100hp to about 170..and better mpg too..and better torque too..

waldamar · Feb 28, 2015

Zen................... not quite 70 - you're just pi55ed off because I didn't buy your rusty lpg tanks! regards

cooltide · Feb 28, 2015

waldamar said:
Zen................... not quite 70 - you're just pi55ed off because I didn't buy your rusty lpg tanks! regards

Ahem, I think they call it patina in the trade:behindsofa:

zen · Mar 1, 2015

didnt realise that was you to be honest...

johndregg · Mar 1, 2015

My 110 also has a rather gutless 8.13:1 engine in it. I had been planning to upgrade the cam (once I can get the cash together). My main concern is that my engine just doesn't pull well up long hills in fifth or even tow a trailer happily. I'd like to gain torque between 1500 and 3000rpm.
Would any of the aftermarket cams make much impression on the low comp motor? I'm using a decent set of headers and exhaust already. The motor has just over 100k on it but has good compression, it also runs exclusively on lpg.

zen · Mar 1, 2015

to be honest..no..

lpg allows one to run really high cr...so why not stick some 9.75 rover pistons in??later heads steel gaskets..or just early rover 10.5 cr pistons?

ie i rum 10.5cr with boost on gas.it loves it!!

but on petrol then i HAVE to run shell nitro gizmo silly price fuel..but lpg no problems..

johndregg · Mar 1, 2015

It all comes down to cost really. I just can't afford to do all that work on the motor for the moment. It's food for thought though!
I'm going to replace the SU set up shortly with an efi plenum (without electronics) and a blos, so I will get a chance to inspect the cam for wear. Maybe a good standard cam and tune up will give me something.

cooltide · Mar 1, 2015

You need more cr to get the best out of gas John.

So how's it going on the efi top end? Have you advanced the dizzy from where you had it with dual fuel?

cooltide · Mar 1, 2015

Sorry, getting ahead of myself.

Get your finger out

johndregg · Mar 2, 2015

Still waiting for a window to do it as she's still my daily driver. Got most of the plumbing sorted. Will start a thread when I do the job.

landover · Mar 2, 2015

These engine mods sound expensive / Would it be cheaper to buy a running vehicle with later engine and fit that ? Lots of bits left over to sell and scrap.

cooltide · Mar 2, 2015

Indeed

martin1512 · Mar 2, 2015

zen said:
soo boring..and wrong .(except for lpg..i love lpg)

and well you must be in your 70's...and not a student..(no offense, but not helpful to poster)

you have it covered..higher compression, new cam,lifters rockers and rocker arms, new timing chain..
efi and prehaps some decent headers.that will raise it from your sub 100hp to about 170..and better mpg too..and better torque too..

Why the hell would he want to do all that? It would be much cheaper to buy a 2nd hand 3.9 from a knackered Discovery and drop it in. Immediate improvement to 180bhp, with a lot less buggering about.

Burtie2904 · Mar 2, 2015

Thanks guys for all the replies, I'm am thinking of just dropping a 3.9 in and then putting efi on that (mainly for fuel efficiency). I am a long way off all of this but I'm just planning.

martin1512 · Mar 3, 2015

Burtie2904 said:
Thanks guys for all the replies, I'm am thinking of just dropping a 3.9 in and then putting efi on that (mainly for fuel efficiency). I am a long way off all of this but I'm just planning.

All 3.9's were efi as standard, wiring it up is fairly simple and has been covered on here in detail.

norseman · Mar 5, 2015

Burtie2904 said:
Thanks guys for all the replies, I'm am thinking of just dropping a 3.9 in and then putting efi on that (mainly for fuel efficiency). I am a long way off all of this but I'm just planning.

I'd check with your insurers first if I were you, the 'commercial' application of RV8's were de-tuned for a reason & you are talking about a huge power increase.

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