can any one give me the low down on running 264 cams coupled with adj pulleys on the rev3 3s=gte engine pro`s and con`s please.
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| Author: | banzaibaz [ Thu Dec 22, 2011 9:19 pm ] |
| Post subject: | 264 cams help |
can any one give me the low down on running 264 cams coupled with adj pulleys on the rev3 3s=gte engine pro`s and con`s please.
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| Author: | Muddy Water [ Thu Dec 22, 2011 9:45 pm ] |
| Post subject: | Re: 264 cams help |
banzaibaz wrote: can any one give me the low down on running 264 cams coupled with adj pulleys on the rev3 3s=gte engine pro`s and con`s please.
264 profile cams are a higher lift cam compared to stock 205 cams (240/50 something I think) so basically higher lift cams mean that the valves are open for longer. This allows more mixture on the inlet side and more exhaust gases to escape = more power. Adjustable pulleys allow you to play around with the ignition timing - advance/retard. I'm sure someone more technically minded than I will be along to explain better. Have a read of this article: http://www.howstuffworks.com/camshaft.htm |
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| Author: | Nibbles [ Thu Dec 22, 2011 9:56 pm ] |
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Pros: Engine will produce more power at higher revs, meaning more BHP for the same boost. Cons: Bottom end torque slightly lower (mainly below turbo boost threshold anyway) Idle slightly lumpy. Engine becomes interference if cam belt snaps (assuming cams used also have higher lift) I'm running HKS 264's in my 185 and find the whole thing feels more responsive and wanting to go - provided you keep the revs up. Trying to pootle up a hill in 5th is a no-no. |
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| Author: | banzaibaz [ Fri Dec 23, 2011 5:20 pm ] |
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Nibbles they have an 8.9mm lift ? cheers for the insight was just wondering if to run them or not. |
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| Author: | Nibbles [ Fri Dec 23, 2011 8:03 pm ] |
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Down to personal preferance and what you want from the car. For spirited driving the cams will make the car feel much more willing. If you want to be able to trundle along in 5th without dropping a gear or 2 on hills then keep it standard. Fitting a hybrid turbo will rule out option 2 anyway. |
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| Author: | banzaibaz [ Sat Dec 24, 2011 9:52 am ] |
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Already running a hybrid Tubby so soon as the uprated belt comes i will give them a go, as for there use im keeping the car just on the road legal limit but mainly for track days. thanks for your input guys. |
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