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SP (New Cam )

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daimlersteve
Posts: 339
Joined: Wed Mar 09, 2016 11:20 am

SP (New Cam )

Post by daimlersteve » Thu Aug 15, 2019 5:47 am

Just installed 210/200 Deg. Duration @50 Thou lift . - 390" f/lift .
This hauls ass .
The best ive tried yet. Idles in 4th gear, pulls from there on .
Back on Dyno next week but feels over 200 hp, probably 15 hp over last cam of 197 deg duration@50- .390 "lift
Speced for torque but no hesitation up to 7000 RPM. grabbed another gear then , and indications are good for the power still coming on . will pull that in in all intermediate gears.
On std. Sus With OA7 needles , clean fast changes and no hesitation whatsoever .
Who said SUs dont work. !!

very happy with result,
Cheers Steve

fredeuce
Posts: 51
Joined: Mon Feb 29, 2016 10:56 am
Location: South Australia

Re: SP (New Cam )

Post by fredeuce » Sat Aug 17, 2019 1:50 am

Steve,
Is this a reground factory cam running factory lifters?
Sounds like a good result.
Cheers,
Fred

daimlersteve
Posts: 339
Joined: Wed Mar 09, 2016 11:20 am

Re: SP (New Cam )

Post by daimlersteve » Sat Aug 17, 2019 2:16 am

hiya,
Org. cam ,welded ( hard faced ) straightened and ground to my own master locally.
Looking forward to tues on the Dyno . Pulls like a train .
Steve

daimlersteve
Posts: 339
Joined: Wed Mar 09, 2016 11:20 am

Re: SP (New Cam )

Post by daimlersteve » Sat Aug 17, 2019 2:18 am

pS, Factory lifters ( cleaned up ) . Org. Radius .
The man that made the master is an old Crow Cams man ( Previous owner ,i think ) Over your side of the ditch anyway .

daimlersteve
Posts: 339
Joined: Wed Mar 09, 2016 11:20 am

Re: SP (New Cam )

Post by daimlersteve » Tue Aug 20, 2019 7:53 am

Dyno run today -- At Crank, 202 HP @5980, 213FT.LB TQ @4088 . .

At wheels 153hp and 161.3 tq.
Previous dyno had power at 152hp with the smaller cam , same setup on this Dyno showed it as 147 hp , so quite conservative.

Looking good , needles were a tad rich so have swapped them and looks great with the Colour- tune plug. Even more responsive . Still needs 37 degrees of all in advance and the limitation is now the small inlet manifold ( 26mm i/d tube . ) High air speed and great for tq. Bigger manifold may give more at the top end , but its the sit up and go i like .

Steve

User avatar
JohnM
Posts: 86
Joined: Thu Feb 11, 2016 1:31 pm
Location: N W London

Re: SP (New Cam )

Post by JohnM » Tue Aug 20, 2019 10:23 am

8-) 8-) 8-) 8-) 8-) 8-)
Jealous!

Keep up the great work, Steve!
John
John M in Middlesex, NW London
1962 SP250 "B" Spec

Sonus
Posts: 182
Joined: Wed Apr 13, 2016 2:19 pm

Re: SP (New Cam )

Post by Sonus » Fri Aug 23, 2019 1:31 pm

daimlersteve wrote:
Tue Aug 20, 2019 7:53 am
Dyno run today -- At Crank, 202 HP @5980, 213FT.LB TQ @4088 . .

At wheels 153hp and 161.3 tq.
Previous dyno had power at 152hp with the smaller cam , same setup on this Dyno showed it as 147 hp , so quite conservative.

Looking good , needles were a tad rich so have swapped them and looks great with the Colour- tune plug. Even more responsive . Still needs 37 degrees of all in advance and the limitation is now the small inlet manifold ( 26mm i/d tube . ) High air speed and great for tq. Bigger manifold may give more at the top end , but its the sit up and go i like .

Steve
Those are interesting figures!

For my engine, although 2.8 liters, we will aim for 34mm ID inlet runners 165mm long as this matches the camshaft specifications.

daimlersteve
Posts: 339
Joined: Wed Mar 09, 2016 11:20 am

Re: SP (New Cam )

Post by daimlersteve » Sun Aug 25, 2019 7:20 am

Using a free App on the Mob. One run ( could be bettered ) 0-60km. - 3 sec. , 0-100km - 7 sec. using 2800rpm and easing out the clutch. Changes at 6000 rpm. Pulls strong , best ive tried yet. great response and torque across the full range .

Steve

daimlersteve
Posts: 339
Joined: Wed Mar 09, 2016 11:20 am

Re: SP (New Cam )

Post by daimlersteve » Mon Sep 16, 2019 1:41 am

New much modified Org. manifold with tapered individual runners , Running 2 X HIF6 ( Rover 3.5 carbs slightly modded needles ) Revs cleanly to 7k . Back on Dyno Wed. to check torque curve . We may have lost a little at 1500 or it may be the needles need a little more attention. Idle is better than before .

Pulls like a train , clean sharp changes .
Regards to all , Steve

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