Technical about camshaft for UT 1,3l
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Technical about camshaft for UT 1,3l
No idea if a Uno 70 camshaft would make any difference, though I have heard that fitting an X1/9 camshaft is supposed to do something? You need the UT owners to confirm what is best. Also bear in mind that Uno 70's are rare as anything so unless you buy a new 70 camshaft you'll be very lucky to find one being broken.
hi, no point fitting a cam from a 70sx. just save your money until u can afford a piper cam.
i run a very high lift steel billet abarth cam (very expensive) but its the best u can get!
Dunc
i run a very high lift steel billet abarth cam (very expensive) but its the best u can get!
Dunc
Hello bbb88 - another new member! :wave: Whereabouts are you?
If you want my personal opinion - don't.
Fact: original camshafts for turbocharged engines have very different valve timing to the camshafts for naturally-aspirated engines - the timing figures are in the Uno handbook. I believe they are different for a reason; less valve overlap to reduce potentially-damaging compressor surge.
I'm not the expert on cam profiles, but it stands to reason that what is necessary for a naturally-aspirated engine ISN'T necessary for a turbocharged engine, since the mixture is forced-in under boost. There isn't the same breathing requirement at all, except when the engine is running off-boost - and then, that's at low revs and low load, when smoothness and economy are more important anyway.
Personally I won't be changing what FIAT developed, since they obviously went to some expense for it.
In a naturally-aspirated engine, the cam change is useful only in conjunction with other improvements (higher compression, bigger carbs), and even then you generally don't get something for nothing; more power at the top end equals less power at the bottom end. The turbocharger overcomes quite a lot of this problem, so in my opinion, it makes cam changes less important.
Dunc of course has set out to create the ultimate race engine - all power to him His engine has many other changes and so, if someone says the cam needs changing, I accept that. But I still don't think a cam change is necessary for a 'standard' Uno Turbo engine.
-Alex
If you want my personal opinion - don't.
Fact: original camshafts for turbocharged engines have very different valve timing to the camshafts for naturally-aspirated engines - the timing figures are in the Uno handbook. I believe they are different for a reason; less valve overlap to reduce potentially-damaging compressor surge.
I'm not the expert on cam profiles, but it stands to reason that what is necessary for a naturally-aspirated engine ISN'T necessary for a turbocharged engine, since the mixture is forced-in under boost. There isn't the same breathing requirement at all, except when the engine is running off-boost - and then, that's at low revs and low load, when smoothness and economy are more important anyway.
Personally I won't be changing what FIAT developed, since they obviously went to some expense for it.
In a naturally-aspirated engine, the cam change is useful only in conjunction with other improvements (higher compression, bigger carbs), and even then you generally don't get something for nothing; more power at the top end equals less power at the bottom end. The turbocharger overcomes quite a lot of this problem, so in my opinion, it makes cam changes less important.
Dunc of course has set out to create the ultimate race engine - all power to him
His engine has many other changes and so, if someone says the cam needs changing, I accept that. But I still don't think a cam change is necessary for a 'standard' Uno Turbo engine.-Alex
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Hi! I`m from Bulgaria
i dont want just change the camshaft i want to put bigger injectors and raise boost for now but later will have more improovments because dont have much money to spend now and my point is that with injectors and raised boost will angine manige with this camshaft
i dont want just change the camshaft i want to put bigger injectors and raise boost for now but later will have more improovments because dont have much money to spend now and my point is that with injectors and raised boost will angine manige with this camshaft
Hi!
is there any engine based modifications that i can perform because the engine i fully dissasambled
http://www.snimka.bg/album.php?album_id=321396&pid=9530548
http://www.snimka.bg/album.php?album_id=321396&pid=9530549
http://www.snimka.bg/album.php?album_id=321396&pid=9530550
http://www.snimka.bg/album.php?album_id=321396&pid=9530551
http://www.snimka.bg/album.php?album_id=321396&pid=9530552
http://www.snimka.bg/album.php?album_id=321396&pid=9530553
http://www.snimka.bg/album.php?album_id=321396&pid=9530547
is there any engine based modifications that i can perform because the engine i fully dissasambled
http://www.snimka.bg/album.php?album_id=321396&pid=9530548
http://www.snimka.bg/album.php?album_id=321396&pid=9530549
http://www.snimka.bg/album.php?album_id=321396&pid=9530550
http://www.snimka.bg/album.php?album_id=321396&pid=9530551
http://www.snimka.bg/album.php?album_id=321396&pid=9530552
http://www.snimka.bg/album.php?album_id=321396&pid=9530553
http://www.snimka.bg/album.php?album_id=321396&pid=9530547
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you could lighten and balance the bottom end
oooooooops not that picture
sorry but i am not very familiar with the terminology in English
do you mean the flywheel sorry for the stupid question but:shrug:
If the girl in the last picture has a big bum you could lighten and balance her bottom end with a bit of liposuction
Seriously, lightening and balancing the bottom end includes the crankshaft, flywheel and for utmost benefit the conrods too. With the engine in bits you could also balance the pistons. This will make the engine smoother and more free revving, and the balancing will also relieve stress on the reciprocating masses inside the engine. Get a set of accurate weighing scales, a dremel and off you go for the small bits and take the crankshaft and flywheel to a reputable tuning place
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If the girl in the last picture has a big bum you could lighten and balance her bottom end with a bit of liposuction
the girls name is Gabriella and she dont need any balancing or lightening procedures even needs some other kilogram
10x for the info
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PowertecETU
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Nice engine 1.3, but here all are 1.6 based on a 1.3-
