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Author Topic:   raise your engine?
mechnic19
Member
posted July 29, 2003 08:38 PM
have any of you guys ever tried to raise your
engine and radiator to help the nose have more leverage on right front through out the corner to help it stick better?fast in heats but trying to get better in dry slick. any advice would be great. or tips for tuning if you have tried it. straight edge across scales 14 1/2 to crank center.


HRT187
Member
posted July 30, 2003 01:35 PM
Could just lower the roll center or move it to the left... seems easier to me. I wouldn't want to deal with shims everytime I pull a motor


dirtbuster
Member
posted July 30, 2003 02:30 PM
i think typically the stock front roll center on most cars too low the way it is. That is why most people put the motor inl ow and also use different balljoints/spindles to try and raise the roll center a little.


HRT187
Member
posted July 30, 2003 04:01 PM
That's fine, but when this guy says he needs to get more leverage on the RF what's the best way to do that? http://www.thedirtforum.com/ubb/smilies/cwm1.gif[/IMG]

Perhaps just a stiffer LF spring is in order I dunno this guy's setup. Just trying to answer his question.[IMG]

mechnic19
Member
posted July 31, 2003 05:49 AM
the track is flat 1/2 mile. the other track
is a banked 1/4 the idea is to raise for flat and drop an inch or 2 for depending how this will work. just trying to gain corner speed. 4 bar ford chassis tail seems to be tuned fairly descent. now been adjusting car year 1/2 . always trying differnt things to get it faster. if this works i'll make quick
change adjustable mounts and blocks. how high is your engine to center of crank?


HRT187
Member
posted July 31, 2003 05:52 AM
I'd just change LF springs then.


mechnic19
Member
posted August 01, 2003 12:00 AM
front springs are 750 rf 650 lf shorter arms
the better, right? been through roll center
on computer just thinking that this would be the same as raising and lowering j bar on the tail. what is your opinion on the concept.after the the work is done.this could be the edge on adjustment for the nose.track to track .nobody has raised their motor after the car was built? how high are your motors set at? please check and reply


HRT187
Member
posted August 01, 2003 05:48 PM
WOW! I'm suprised that you already have that much split. Shorter arms aren't always better, it'll make a lot of movement which I assume is whats happening is the roll center is migrating right a ton and making a lot of anti roll. I've heard a rollcenter left of center works best.

The idea is neat, and I think going outside the box now and then is neat too. The only bad thing I see about it is that it may make the car more of a handful if tight or in an evasive move to the right.

mechnic19
Member
posted August 02, 2003 12:12 AM
the car right now is pretty good if i don't
lose the rythym. I'm geetting better at fine tunin brake ballast at each track. car drives
so easily (on the banked track)I've caught myself with one hand on the shifter. more times I drive it the closer i'm getting to the magic night.It is hard work with a lot of trial and error.that defines a racer :work, think and think when racing. thank you. HRT187 for all the replies. as the
year winds down I suppose I'll have to do this or wonder about it all winter.thanx again.



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