Beaver Posted February 3, 2009 Share Posted February 3, 2009 hey all. managed to track down a guy who hass a few lumpy cams from a hillman hunter for sale. i have just brought another hunter , so the plan is to get the motor running and slowly do some work to it (if i find any money lol). he only wants 60 buks so yeh, im keen as. no idea on the specs etc but i dont think it would be too wild, as the rest of the bits hes selling are standard. ive read that u can lose power at low revs etc with a wild cam but yeh, itd be sweet to have a nice lumpy idle long story short....is it worth it/safe to put a lumpy cam in a standard engine? probably a stupid question but hey we all gota learn sumday Quote Link to comment Share on other sites More sharing options...
Brock-Lee Posted February 3, 2009 Share Posted February 3, 2009 it will work. but it wont work that well. lol put on a bigger carb and some extractors and let the engine breathe a bit more and it will all start to come together. but all this comes at a sacrifice to drivability, economy etc etc. DOIT. Quote Link to comment Share on other sites More sharing options...
Beaver Posted February 3, 2009 Author Share Posted February 3, 2009 so itl drive? thats all im worried about haha Quote Link to comment Share on other sites More sharing options...
Sparkle Posted February 3, 2009 Share Posted February 3, 2009 doit. Will sound well mean. Who cares if it makes it go faster, you can be all "GrUmPy CaMs" Quote Link to comment Share on other sites More sharing options...
OSM Garage Posted February 3, 2009 Share Posted February 3, 2009 +1,000,000! Keeps them guessing at the lights! Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted February 3, 2009 Share Posted February 3, 2009 Do your homework before fitting it. Make sure that the valves wont crash into the block deck, or into the pistons. some (English) engines turn into a can of worms when you tyr and modfiy them. (i've heard a HORROR story about a guy who put a big cam into a triumph. Quote Link to comment Share on other sites More sharing options...
Beaver Posted February 3, 2009 Author Share Posted February 3, 2009 Do your homework before fitting it. Make sure that the valves wont crash into the block deck, or into the pistons. some (English) engines turn into a can of worms when you tyr and modfiy them. (i've heard a HORROR story about a guy who put a big cam into a triumph. its a spare motor so yeh its not a huge deal if it blows up, would actually be kinda funny haha. but yeh i shall look into it Quote Link to comment Share on other sites More sharing options...
lowlancer Posted February 3, 2009 Share Posted February 3, 2009 Find out something more about it, or get it looked at. Just how "grumpy" it is will define whether you have valve/piston interference etc Quote Link to comment Share on other sites More sharing options...
Snoozin Posted February 3, 2009 Share Posted February 3, 2009 Do your homework before fitting it. Make sure that the valves wont crash into the block deck, or into the pistons. some (English) engines turn into a can of worms when you tyr and modfiy them. (i've heard a HORROR story about a guy who put a big cam into a triumph. Yup and without knowing the camspecs you be unlikely to dial it in properly and you'll end up with a waste of time and money lemon engine anyway. Quote Link to comment Share on other sites More sharing options...
Rusted Posted February 3, 2009 Share Posted February 3, 2009 Best to start off with Carbs and extractors as already stated. But if you have got the cam, doit. Quote Link to comment Share on other sites More sharing options...
Jase Posted February 3, 2009 Share Posted February 3, 2009 a bit of play doe or blue tack on top of the piston, put head back on wind over by hand remove head check clearances first, too much lift and its going to smack valves onto the pistons if not set up correctly, too grumpy and the valve springs won't be able to fully close the valves without being uprated up in the rev range, similar thing happens with hydraulic lifters if you over rev them in a v8 and they pump up leaving the valves open a bit, if its a grenade motor why don't you port the head a bit get it planed fit carbs extractors uprate the valve springs with heavier ones and put it together nicely and then drop it in the hunter as opposed to a half pie play thats more labour intensive in the end Quote Link to comment Share on other sites More sharing options...
Beaver Posted February 4, 2009 Author Share Posted February 4, 2009 yeh i see your point. if i sell my bike then ill get some work done on it Quote Link to comment Share on other sites More sharing options...
Ogre Posted February 4, 2009 Share Posted February 4, 2009 i had just cam and headers done on my engine, made it 100x better, although i guess it depends alot on the standard specs of the cam in the first place.I guess if its not to lumpy and standard head can handle (valve springs etc) then theres no real lose.Mite have to richen up ya carb alittle tho too. Quote Link to comment Share on other sites More sharing options...
Beaver Posted February 4, 2009 Author Share Posted February 4, 2009 "I was looking at the cams and was wondering if you had any specs and serial numbers for the standard cams. There are two cams with the letter D and one with an E in the box these are the numbers ive got MC24424 D 1981094 X2 of and one is very lumpy not what i would call a street cam MC24424/N E 1981094 X1 not sure bout this one. " this is what the guy selling them told me....does this mean anything to anyone? thanks Quote Link to comment Share on other sites More sharing options...
Yowzer Posted February 4, 2009 Share Posted February 4, 2009 Depending on how aggressive the cam is it is possible that you will lose power in a factory engine. Low end torque will fly out the window, and because the intake/exhaust is too restrictive it won't breath at the top end where the cam makes the power. Chuck it in anyway. Valve springs are a biggie, get some double valve springs if ya can. Bigger / twin carbs, ya may have to upgrade the fuel pump as the mechanical one might not keep up (avengers have this problem), and port the head to get the most out of the cam. Quote Link to comment Share on other sites More sharing options...
slipsittin Posted February 5, 2009 Share Posted February 5, 2009 Take them to a reconditioner and get them profiled to see if they are different from standard or just have different numbers, and if they are ground are they ok or poked. There is no point in putting in something thats more fucked than the thing you pull out for the time and effort involved to do the job. Corey Quote Link to comment Share on other sites More sharing options...
HUNTD Posted February 5, 2009 Share Posted February 5, 2009 these are the specs of the regrind i was/may do some time in future Adv 290 degrees 230@050" Lobe centre 108 degrees Cam lift .300" Quote Link to comment Share on other sites More sharing options...
slipsittin Posted February 5, 2009 Share Posted February 5, 2009 Thats quite a fast road cam Donna. That should be pretty torquey on the mid range also. Corey Quote Link to comment Share on other sites More sharing options...
KKtrips Posted February 5, 2009 Share Posted February 5, 2009 , itd be sweet to have a nice lumpy idle pull out choke and leave it out = lumpy idle!! Quote Link to comment Share on other sites More sharing options...
Brock-Lee Posted February 5, 2009 Share Posted February 5, 2009 /pull a plug lead 1 Quote Link to comment Share on other sites More sharing options...
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