v8hotrodboy
Active Member
This guy seems to know his stuff, i have two of his Rover engine books and built my 4.2 using some of his tips. That seems to run well. How to Power Tune Rover V8 Engines for Road and Track [Book]
jai_landrover
Well-Known Member
no substitute for cc
unless its a ****el?
V8Safari
New Member
Same here - and getting rather confused
But is it then correct to assume that easiest, cheapest and most efficient way to gain power and more torque is bigger block or larger capacity if I have 3.5l now?Hence if I fit 3.9l block to what I have is that possible or do I need other heads too and what wouls estimate outcome be in terms of BHP and torque?
Same here - and getting rather confused
Hence if I fit 3.9l block to what I have is that possible or do I need other heads too and what wouls estimate outcome be in terms of BHP and torque?
Not long ago I read a thread with some great posts by 'Teflon'. It was titled "3.9 4.2 or 4.6". I don't know whether it will answer your questions, but I thought it was excellent food for thought. In essence, his main point was to make sure that whatever you've got under the bonnet, make sure it is running absolutely as well as it can in standard form, then go from there. I don't pretend to be an expert, but I thought that made perfect sense. Have a read:
http://www.landyzone.co.uk/lz/f42/3-9-4-2-4-6-a-82882.html
lol should be 3.9 4.2 or 4.6 = loads of problems with blocks liners and headgaskets and I sticking with 3.5
thats not really true - not all 94mm bore blocks have liner/headgasket problems.
You are sticking with a 3.5 cause you can't afford to change it lol
1396midget
New Member
Same here. And my 3.5 has only done 19K miles from a £3.5K RPI extravaganza. (didn't stop them only sealing the fuel pump on with sealant and no gasket tho..) All the upgrades I do on the 3.5 will be transferable to the bigger engines when I decide I want one of them.
fett
Well-Known Member
jai_landrover
Well-Known Member
I'd have a rebuilt and sorted 3.5 over a 3.9 anyday.
I think the next step with a 3.5 will be a semi experiment. I think I may have to do one next year. might even get to playing with ceramic coatings aswell!! The theory seems good do you reckon you could get 30mpg out of a V8 and still have a stonking Ammount of oomph?
I think the next step with a 3.5 will be a semi experiment. I think I may have to do one next year. might even get to playing with ceramic coatings aswell!! The theory seems good do you reckon you could get 30mpg out of a V8 and still have a stonking Ammount of oomph?
V8Safari
New Member
Thanks Turtled - lots of info there
er yes they do and no , come here and say that!
They are significantly more prone to liner problems but not every block will develops it particularly those with lambda sensors and or LPG
when I get mine fetted with I'm getting top hat liners put in so going to have no worries.
So long as your cooling system is actually doing its job and everything is working as it should the engine should be fine.
fett
Well-Known Member
been told by 2 engine builders now that top hat liners dont always solve the problems and they irontite them after the rebuild to try and help with this. that says to me keep away! several k for like maybe 100hp extra which only lasts 30k miles at best before failure. not worth it. but we can all do as we like.
jamesmartin
Well-Known Member
top hat liners work like wet liners in that they are sealed to block with flange blocks can still be or crack but unless block gets seriously poor should seal ,liners need to be good material so they dont crack
jamesmartin
Well-Known Member
fitted properly shouldnt move as should be trapped by head ,not allways enough care taken perhaps
