Weslake not Westlake!
I have a Ford gearbox and clutch.
If the car is going to be used on the road and in traffic I'd think about a
different clutch. If the car is just going to be used in motorsport the
solid plate clutch would be ok.
A 4.5 diff at 7,500 rpm should be 110mph on 13" x 70 profile tyres so your
92mph sounds a bit low for 7,000rpm.
You want the car geared such that the estimated maximum speed occurs at the
peak power of the engine. So you need to know if peak power is at
7000rpm. If your cam is the SPVP4 from APT then it might peak at 7000rpm
though
I'd guess a bit less.
120mph is a lot to expect of a Spridget and is a lot more to expect than
118mph. You'll need a car with some reasonable aero mods to achieve 120mph.
You'll not easily get 150bhp from a normally aspirated A-series and almost
certainly not with cam you have. And if you swap the cam to say the SPVP5
it will need regular rebuilds to continue to achieve that power assuming
you can get it to produce that in the first place.
Weslake-Monza 1330
In a message dated 26/09/2009 04:24:42 GMT Daylight Time,
mhagopian@hoppetool.com writes:
Paul- haha no problem! I was wondering who you were talking to?!
Westlake- I already bought the rivergate kit... it was supplied with a
"race" clutch solid disc with no springs, very small I would say probably 6"
in dia.. I said 100hp because I was told that was the "break" point.. I want
to build a motor closer to 150hp, could i have a few more details on your
conversion please?
The motor I am using now is very strong and I am not sure the actual hp..
I ran a 4.55 and a 4spd ribcase and the gears were very close(reving to 7k)
and the top speed worked out to be around 92mph.. I am running at the glen
and am trying to make it to 120mph at 7000 rpm with the 5 speed. I was
actually planning on selling my locked 4.22 and open 4.55 and buy a locked 3.9
or a locked 4.55, I run at mostly long tracks. I ran New Jersey Motorsports
Park last Sept and spent the entire front straight at the rev limiter and
the back straight hit it for about 5 seconds. Unfortunately I dont know the
exact power my motor puts out... I asked for help because I bought from
Bud Pazur and he was unsure about the power and about rev limit.. Heres what
I know.. scatterpattern cam type 4 i think its spvr4 or something? 12.5:1
pistons .040" over and a lot of extensive head work has been done.
David- The LSD is a Tran-X diff 4.22, I hope I end up in the front of the
races I enter but chances are not considering I have only driven the car
once.. but finished 7th! I know they sell a 5th gear lock out for competition
use.. If I start winning and get bagged for it I could use this! Thanks for
the heads up!
Thanks for all of the advice guys I will check everything out.. Im still
new to all of this!
Reply |Matt Hagopian to Paul
show details 11:11 PM (0 minutes ago)
Oooops-!
Meant to call you Matt, NOT David!
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