Which v8 camshaft?

fett · Dec 17, 2011

where would the irontite come in to it?

jamesmartin · Dec 17, 2011

POAH said:
They are significantly more prone to liner problems but not every block will develops it particularly those with lambda sensors and or LPG

no not all but all are at risk ,200 thou taken off aluminum bore greatly weakens block and makes it prone to crack ,we had big problem wwith fitting 3.9s into defenders in early 90s after boring liners out found cracks in ali bore and ali wall thickness the same as 3.5 ,lr swore was different casting and had thicker wall and issue was porosity ,if i wanted to win one race build a 4.6 if needed long term 3.5

fett · Dec 17, 2011

well said

POAH · Dec 18, 2011

jamesmartin said:
no not all but all are at risk ,200 thou taken off aluminum bore greatly weakens block and makes it prone to crack ,we had big problem wwith fitting 3.9s into defenders in early 90s after boring liners out found cracks in ali bore and ali wall thickness the same as 3.5 ,lr swore was different casting and had thicker wall and issue was porosity ,if i wanted to win one race build a 4.6 if needed long term 3.5

So what you are saying is that you agree with me lol

fett · Dec 18, 2011

if your building a one race engine then the bigger bore sizes are better , if you need it to last in a road/offroad car then 3.5 is best all the way is what he is saying poah.

becuase they weaknd the block by over boring the 94mm bore and bigger engines have too many problems.

so he doesnt agree with you I am afraid, I know cos we were just talkin about it.

POAH · Dec 18, 2011

fett said:
if your building a one race engine then the bigger bore sizes are better , if you need it to last in a road/offroad car then 3.5 is best all the way is what he is saying poah.

becuase they weaknd the block by over boring the 94mm bore and bigger engines have too many problems.

so he doesnt agree with you I am afraid, I know cos we were just talkin about it.

he is agreeing because he said they are more prone which is what I said - unless I'm actually completely reading the reply wrongly

I'm not saying they don't get problems but you are taring all the 94mm bores with your stick which ain't true.

fett · Dec 18, 2011

nah, is true, not every single unit but most will have hgf,liner,block problems at some point.

wheras a minority of 3.5 will in comparison so for a vehicle which is used more than once for a race its best to stick with a 3.5 and just make it the best 3.5 you can.

poah, you can do what you like of course, its your time and money. just saying that 3.5 is more reliable although far from the perfect engine in the grand scheme of things.

also that if you going to throw thousands of pounds and hours at making a rv8 go and be reliable (if its possible) then it may well be better spent on making another v8 fit in- in more or less standard form

fett · Dec 23, 2011

POAH said:
3.9 is basically a 3.5 cam with 2 degrees of advance not worth while fitting.

if you want to do the head work yourself check out this thread

The V8 Owners Forum - :: View topic - DIY head porting

I knew I had seen it somewhere, seems worthwhile at that price

Rover V8 3.9 EFi Cam, Lifters & Steel timing Set - V8 Tuner

pornstarmax · Dec 23, 2011

fett said:
nah, is true, not every single unit but most will have hgf,liner,block problems at some point.

wheras a minority of 3.5 will in comparison so for a vehicle which is used more than once for a race its best to stick with a 3.5 and just make it the best 3.5 you can.

poah, you can do what you like of course, its your time and money. just saying that 3.5 is more reliable although far from the perfect engine in the grand scheme of things.

also that if you going to throw thousands of pounds and hours at making a rv8 go and be reliable (if its possible) then it may well be better spent on making another v8 fit in- in more or less standard form

Agree - I have spent a lot trying for 300BHP, on a N/A 4.3... ...I could of spent half and gone for a LS3, and been less of a head ache....

fett · Dec 23, 2011

yeah , and it would sound great

Steve_R1979 · Dec 23, 2011

fett said:
yeah , and it would sound great

But how much effort is involved in getting a non-rover V8 to fit the chassis and get the gearbox etc to mate up???

fett · Dec 23, 2011

less than getting horsepower and reliablity out of a rv8, thats what we are saying

Steve_R1979 · Dec 23, 2011

Hmmmmm!!!!

fett · Dec 23, 2011

its like a lot of things if you have the balls to start big it will pay off in the long run, start small and spend a fortune to get not much out of a rv8. sounds like pornstarmax has been there done that, I would ask him

Steve_R1979 · Dec 23, 2011

fett said:
its like a lot of things if you have the balls to start big it will pay off in the long run, start small and spend a fortune to get not much out of a rv8. sounds like pornstarmax has been there done that, I would ask him

Granted. Just don't have the skills or space to try something like that!!

If I had the space I'd give it a go!

fett · Dec 23, 2011

it also depends what you use your truck for because you dont need silly hp for normal landy use

Steve_R1979 · Dec 23, 2011

fett said:
it also depends what you use your truck for because you dont need silly hp for normal landy use

You don't need big HP for much really, I just like having it!! I've always had big power cars, never needed any of them.

fett · Dec 24, 2011

hmmmmm on the street you can use it, I like my 350hp bmw v8

Steve_R1979 · Dec 24, 2011

fett said:
hmmmmm on the street you can use it, I like my 350hp bmw v8

Yeah you can, until you get caught!!!!

fett · Dec 24, 2011

I feel the need the, need for speed!

Which v8 camshaft?

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