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Isky, Piper and other performance camshafts for the 2.5 V8

Sonus
Posts: 177
Joined: Wed Apr 13, 2016 2:19 pm

Re: Isky, Piper and other performance camshafts for the 2.5 V8

Post by Sonus » Sun Sep 10, 2017 8:47 am

daimlersteve wrote:
Fri Sep 08, 2017 10:45 am
Whats you head flows ?
steve.
Ps. Dropped the new pistons and bearing into the machinist today, with any luck there might be some progress in the next few weeks.
This is what the computer spat out :)
Attachments
image002.jpg

daimlersteve
Posts: 299
Joined: Wed Mar 09, 2016 11:20 am

Re: Isky, Piper and other performance camshafts for the 2.5 V8

Post by daimlersteve » Sun Sep 10, 2017 9:03 am

Sonus,
I can email you a graph comparing std with various others i have measured. Would have to tidy the page up for another to understand it. If you'd like it let me know. One of mine ( the current in the car ) but not the more recent iteration is laid out by the thou lift /degrees.( about four pages of numbers) Much easier to read as a graph. Even going over the nose it is quite differing on the lift to the closing side. The usual method of setting up 10 degrees either side of full lift will have it installed incorrectly as the full lift is over 3+ degrees. This cam and the new one are set up on the 50 thou lift data. Of course if the head is not in tune with the cam it aint going to be up to expectations.
steve

Sonus
Posts: 177
Joined: Wed Apr 13, 2016 2:19 pm

Re: Isky, Piper and other performance camshafts for the 2.5 V8

Post by Sonus » Sun Sep 10, 2017 4:18 pm

I'd really appreciated that Daimlersteve. I believe you have my e-mail address?

Ozzsp250
Posts: 160
Joined: Tue Feb 16, 2016 12:35 am
Location: Arizona, USA

Re: Isky, Piper and other performance camshafts for the 2.5 V8

Post by Ozzsp250 » Wed Jul 18, 2018 9:29 pm

Finally getting a chance to get back to the forum.

Have moved back to Arizona so car and the engine I'm building are all here. I was going through my documents and came across the Isky cam that is in my engine.

Have not had the opportunity to run the engine again to trouble why the right carb is flowing twice the air that the left carb is. I have redone the linkages, re-bushed as needed and both butterfly plates appear closed. Need the weather to cool a bit as the garage is over 110 degrees F about 43 C!
Attachments
SPP250 Camshaft.jpeg

daimlersteve
Posts: 299
Joined: Wed Mar 09, 2016 11:20 am

Re: Isky, Piper and other performance camshafts for the 2.5 V8

Post by daimlersteve » Thu Jul 19, 2018 3:08 am

A typo there on that sheet,--- the 50 thou lift will always be less duration than the advertised.
steve

Christopher Storey
Posts: 232
Joined: Wed Mar 16, 2016 6:40 pm
Location: Cheshire

Re: Isky, Piper and other performance camshafts for the 2.5 V8

Post by Christopher Storey » Fri Jul 20, 2018 7:24 am

Yes indeed, Steve. I could not understand how with greater lift used as the measuring point, the overlap would be greater. It calls into question all the information given on the diagram ( and makes you wonder just what cam you are getting )

daimlersteve
Posts: 299
Joined: Wed Mar 09, 2016 11:20 am

Re: Isky, Piper and other performance camshafts for the 2.5 V8

Post by daimlersteve » Thu Jul 26, 2018 11:17 am

Any update ?

Sonus
Posts: 177
Joined: Wed Apr 13, 2016 2:19 pm

Re: Isky, Piper and other performance camshafts for the 2.5 V8

Post by Sonus » Fri Aug 03, 2018 7:23 am

I have decided to go with Penta Motorsports camshaft. I believe they have them made by Bullet camshafts - http://www.bulletcams.com/

Sonus
Posts: 177
Joined: Wed Apr 13, 2016 2:19 pm

Re: Isky, Piper and other performance camshafts for the 2.5 V8

Post by Sonus » Wed Jan 09, 2019 9:35 am

Here is a chart showing the current camshafts I have been able to track down.

I take no repsonsibility of any incorrections
Attachments
Daimler V8 Camshaft comparisson chart_rev_07012019_withoutpictures.xlsx
(18.15 KiB) Downloaded 28 times

Sonus
Posts: 177
Joined: Wed Apr 13, 2016 2:19 pm

Re: Isky, Piper and other performance camshafts for the 2.5 V8

Post by Sonus » Wed Jan 09, 2019 9:42 am

I have the spec sheets available, but they are too large to post on this forum. Send me a message and i will pass them on.

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