mcg
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| posted on 16/5/11 at 02:00 PM |
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Would you bother with reprofiled cam??
I have an 8v 2.0L Vauxhaul engine that I will be running fireblade bike carbs on, with standard (old school) 'points' ignition on. I have
had the engine running before, but wont really know how good it is until I have had it on the rolling road and the carbs balanced. I have been
thinking of getting some reprofiled cams from autosprint in birmingham to boost the power output a little more.
Would you bother?
I have been told that my oldish 8v engine with bike carbs will give approx 130bhp (at best), so I figured an extra 12hp (ish) from reprofiled cams
could be good. I'm basically looking at £150 for the cams and followers.
Is replacing them as straight forward as it seems, or am I opening up a can of worms that wont give me noticeable benefit, and cost me un-necessary
money??
Discuss....!!!!!
Advice as always is massivley appreciated.
Thanks in advance,
Matt
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r1_pete
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| posted on 16/5/11 at 02:33 PM |
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IMO you would be better putting the money towards upgrading to a 16v engine with electronic ignition, preferably distributorless.
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blakep82
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| posted on 16/5/11 at 02:54 PM |
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yep, that £150 will easily buy you a vauxhall ecotec, which should be easy enough to swap for your 8v engine.
ecotecs are 130bhp as standard on the injection system, carbs and a better exhaust should give you a decent bit more
not sure how far you are with the 8v, and i'm not sure if its almost a straight swap mounting/bellhousing wise
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marcjagman
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| posted on 16/5/11 at 03:40 PM |
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Nothing wrong with re profiled cams. You could get an Ecotec as sujested or maybe your like me and prefer the old stuff.
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Charlie_Zetec
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| posted on 16/5/11 at 04:12 PM |
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The old 8V Vauxhall engines are virtually bulletproof - I've seen cambelts snap whilst doing 70mph and not a spot of damage done; just a new
belt, re-time and go. They're not the most powerful, but in terms of reliability and durability, I think you'll be hard pushed to find
something better....
The 16V engines, (earlier XE/redtop type or latter blacktop/ecotec) will obviously give more power, but I don't know how well they'd last.
The redtops produce 150bhp as standard, but most will have been thrashed, and issues such as noisy tappets, pourous head etc. would need to be
investigated. The ecotecs only gave circa 130bhp, but (to my knowledge) were less succeptable to the aforementioned issues - an offset to the power
issue.
I've had numerous cars with the redtop engine in and loved them all, but I think they're getting a bit dated now, and unless you're
prepared to spend money on getting a good, low mileage, unmolested one, or having it rebuilt, then the ecotec would probably be the better choice in
this instance.
So if it were me, I'd not bother with the cam and see if you can find an ecotec to upgrade to for similar money. But I suppose it depends on
the cost of other bits such as inlet, exhaust etc. and how far you've already gone with the build!
Artificial intelligence is no match for natural stupidity!
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mcg
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| posted on 17/5/11 at 08:19 AM |
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awsome - thanks everyone.
This build is quite a way through, so I will probably keep it as is, and then after having enjoyed it as is for a while, will probably go for a bigger
upgrade in the engine department.
cheers again
matt
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laurencedawson
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| posted on 19/5/11 at 10:11 AM |
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just to throw another opionion in!!-- £150 sounds pretty good for cams, kits are ususally much more than that,
plus the satisfaction of doing it yourself
les
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