Any guys who switched from Kelford 272 to 280s???
Dec 9, 2009, 02:15 PM
#16
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lets say at 3k u are at 18psi if u swtich to the 280's ull most likely hit 18 psi at 31-3200 rpm. this is just an example so u get an idea of what im talking about. each car will varry but im guestimating i will only lose 1-200 rpm of spool time. ull also probably notice a few hp/tq loss at low rpm's...
Dec 9, 2009, 02:16 PM
#17
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280/280 is only suggested for 1000hp/42r or bigger turbo. 280/272 is in the middle of this and 272/272 which is more suited for 30-37r turbos. Thats what a differnt company listed should hold true here.
Dec 9, 2009, 02:24 PM
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As a general statements thats true. but i am only going to be running a twin scroll 35r. not a HUGE turbo by any means, but i am running the 272/280 so it can force more air in and breathe more. so doing a 272/280 does not mean that you need to be running over a 37r
Dec 9, 2009, 02:30 PM
#19
As a general statements thats true. but i am only going to be running a twin scroll 35r. not a HUGE turbo by any means, but i am running the 272/280 so it can force more air in and breathe more. so doing a 272/280 does not mean that you need to be running over a 37r
just imagine a stock 8 turbo running to 9k.. its not going to due any power running that high rpm...
, do your homework and dont let false info enter threads...
Dec 10, 2009, 07:06 AM
#27
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springs arent needed on the kelford 272's if your only revving to 7500 rpms. but i have seen valve float at 7900-8000 many times. so i guess your one of those stock turbo guys eh? and every car is diff, some can make 650hp on stock block and some blow at 575. as some cars will get valve float with the kelford 272's on stock springs and some wont.
Dec 10, 2009, 11:36 AM
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I upgraded my springs/retainers so ican safely spin the motor up to 8500rpms....didn't feel safe doing going any higher then that....I heard Rods/Rod bearing failure is more of an issue past that point.
Dec 10, 2009, 01:41 PM
#29
Do it once, Do it right.
