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Post by gemininja on Sept 30, 2009 19:37:56 GMT 12
anyone know a grant rankin? aparently he used to built vette rally cars..
he was at my work yesterday and he had a perv at my vette, i wasnt there but he told one of the guys i work with that he knows everything there is to know about building them for decent power (top secret cam grind and such..)
getn HP out of a 1275 seems to be like getn blood from a stone but if hes legit it might be worth contacting him. he left me his #
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Post by gordo on Sept 30, 2009 19:52:52 GMT 12
Did he actually say 1275?  Chevette is a 1256 engine. I'd like to know a bit more about what he thinks he knows - like screw in rocker studs so they don't pull out at high rpm with heavy springs - as I'm very sceptical of people who claim to know "everything". I'm also quite suspect about claims of "secret" cam' grinds and the like. Maybe he is a 1256 guru but remember it's going to be your engine and your money. |
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Post by misdablack on Sept 30, 2009 20:17:54 GMT 12
is it really worth spending money on a stock chevette engine? be cheaper & easier just swapping it out for something more powerful. i dont think it would raise the overall price of the car either.
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Post by gordo on Sept 30, 2009 22:03:50 GMT 12
True, but it can be fun playing around with the original engine as well.
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Post by bulldog on Oct 1, 2009 8:15:41 GMT 12
i toyed with this in my aqua one but considering im likely at some stage to be towing the race car with my sedan the 2300 was a better option.
I have all the books from Blydenstein to tune the 1256 including cam grind specs etc so no biggie finding out that and from memory best setup was fully lightened balanced bottom end, improve the oiling to bearings, twin throat downdraft weber 28/36 (from mem) ultra hot cam, flowed head etc. Keep in mind they only ended up with about 100bhp in the end so perhaps not the best bang for buck. I'm sure Gordo knows most of the tricks
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Post by zep on Oct 1, 2009 13:16:02 GMT 12
I would imagine that the above setup would have sounded the bees knees tho  |
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Post by gordo on Oct 2, 2009 21:07:41 GMT 12
Craig, be interested to have a read of the B'stein book sometime, if possible.
A few years back I knew a guy in the NCC that did a lot of development work for GM for racing the Chevettes, things like milling heads and welding in ports for four seperate inlet ports and dual sidedrafts, modified rocker system that used a shaft mounting for high rpm stability, etc - pretty full on engine modifations and a heck of a lot more than I would ever have dreamed of doing.
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Post by gemininja on Oct 3, 2009 12:42:03 GMT 12
haha 1275 is my bad.
im not looking for uber power, but a 5speed would be nice.. its a toss up between doing the 1256 and susing out how to fit a 4k box. or working on the 161 i have in the shed and and shoving that in. ither way i will need to source a gearbox and do some mods to the car..
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Post by gordo on Oct 3, 2009 22:05:28 GMT 12
There were indeed a few conversions using the RWD Starlet gearbox and, IIRC, a machined off Chevette bellhousing with an adaptor plate.
There was a machinist in Whangarei who did at least one but don't have any realy useful details - if I remember his name I'll let you know.
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Post by bulldog on Oct 4, 2009 14:26:45 GMT 12
We just did the exact same process at Tony's to fit the celica 5 speed to c20xe
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Post by crazytim on Oct 4, 2009 15:40:35 GMT 12
haha 1275 is my bad. im not looking for uber power, but a 5speed would be nice.. its a toss up between doing the 1256 and susing out how to fit a 4k box. or working on the 161 i have in the shed and and shoving that in. ither way i will need to source a gearbox and do some mods to the car.. Haha embelishment! |
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Post by crazytim on Oct 4, 2009 15:57:22 GMT 12
i toyed with this in my aqua one but considering im likely at some stage to be towing the race car with my sedan the 2300 was a better option. I have a sedan towbar if you havnt got one its yours. |
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Post by gemininja on Oct 4, 2009 20:41:01 GMT 12
i have sedo and hatch towbars just sitn there
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Post by crazytim on Oct 5, 2009 18:30:12 GMT 12
fark... who'd wanna tow with a 1256 vette?
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Post by crazytim on Oct 5, 2009 18:31:01 GMT 12
fark... who'd wanna tow with a 1256 vette? Spose be good for a bike rack... |
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Chevette is a 1256 engine.
