HP street 1679 cam?

[NJ John]

I have some thick wall 88's and some nice ported (still round) heads, 40 Dell's, ce crank and a 1.5 merged header. I was leaning towards a Web 86a. I want it to be super fun and drivable on the street and maybe rag race every once in a while. I have a spare set of 1.4 rockers.ughts on this cam choice? I'm thicking a fk7 would.be too small and an fk8 would.be to.big.
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1973 standard, yellow, lowered, 3” narrowed front, 1600 blo-thru turbo w/single dell 15.4@86, so far
11.41 et buggy. Long gone
Let’s go O’s! Let’s go O’s!
https://www.youtube.com/@AirSpooledGarage

[yamaducci]

Once you approach the .500"ish range with stock valves and limited porting you are not going to see much more benefit than if you stay with a lower lift cam. But what you will see is unecesary hammering on the valve train.
If you didn't run out of flow at that lift with those valves and ports then I say have fun.
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-John Cox
My 2498 Turbo Re-Build Thread: http://www.thesamba.com/vw/forum/viewtopic.php?p=5578697#5578697

3rd Brake Light Safety Stars- I still have a couple with blue light left. Email me if interested.

[NJ John]

The heads are ported nicely and have bigger than stock valves. I was told. 40x35, but look to be 39x32. I'll take them apart shortly to cut for dual springs and measure.
_________________
1973 standard, yellow, lowered, 3” narrowed front, 1600 blo-thru turbo w/single dell 15.4@86, so far
11.41 et buggy. Long gone
Let’s go O’s! Let’s go O’s!
https://www.youtube.com/@AirSpooledGarage

[yamaducci]

Then it sounds like you will have fun with this cam. You'll definitley need the dual springs. Keep us posted.
_________________
-John Cox
My 2498 Turbo Re-Build Thread: http://www.thesamba.com/vw/forum/viewtopic.php?p=5578697#5578697

3rd Brake Light Safety Stars- I still have a couple with blue light left. Email me if interested.

[mark tucker]

check for coil bind.

[James Arredondo]

I had a K8 in my 1679.

Specs;
69 CW Crank
Stock Weight Flywheel
Stock Rods
Engle K 8 w/Scat 1.4 rockers
Cima/Mahle 88's w/ Berg Cylinders
Jeff Denham Heads, Oval ports 40x35.5
1 1/2 merged exhaust w/ Dual QP's
Dual 40 Dell's

This was such a fun motor. I put the K8 in it for shits n giggles just to see how it would run. I was quite happy with it. It was plenty streetable and would pull some good RPM with my close ratio gear box. IMHO, if your able to "play" with different combo's, do it. Of course watch all your tolerances and make sure with a cam this size to run dual springs and some sort of heavy duty push rod.

[NJ John]

The cam actually only lifts to .468 with 1.4 rockers and ..252@50 duratio.

I think the duration on a fk8 would suffer with a stock ratio trans.
_________________
1973 standard, yellow, lowered, 3” narrowed front, 1600 blo-thru turbo w/single dell 15.4@86, so far
11.41 et buggy. Long gone
Let’s go O’s! Let’s go O’s!
https://www.youtube.com/@AirSpooledGarage

[Alstrup]

Scat C45 w. 1,25 to 1,3 rockers would be killer, - and very driveable.

T

[midtravelmidengine]

FK-42, Done.
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[NJ John]

Anyone ever run an 86a in anything?
_________________
1973 standard, yellow, lowered, 3” narrowed front, 1600 blo-thru turbo w/single dell 15.4@86, so far
11.41 et buggy. Long gone
Let’s go O’s! Let’s go O’s!
https://www.youtube.com/@AirSpooledGarage

[Dan Ruddock]

86a is a great choice. It is quiet, smooth and easy on your valve train and makes a great street cam. A mildly tuned 2.0 914 I drove with a 86a ran great. The quality of web products make them an excellent choice. The whole 86 series are all good cams. The 86b would be a little too much for a stock stroke street motor. The 86-5 is also a choice it is 244@ .050 if you want more low end. I am a web dealer if you don't have it yet. Dan

[Bewitched]

W120 and 1.25 rockers

[Dan Ruddock]

[NJ John]

That would not be easy on his valve train and he allready has 1.40 rockers. It's a street car. Dan[/quote]

True
_________________
1973 standard, yellow, lowered, 3” narrowed front, 1600 blo-thru turbo w/single dell 15.4@86, so far
11.41 et buggy. Long gone
Let’s go O’s! Let’s go O’s!
https://www.youtube.com/@AirSpooledGarage

[Alstrup]

On a side note I find it rather interesting that a good deal of builders like the 86a cam. To me its a sort of in between cam that never really impresses me, rather difficult to tune, and the power is sort of over when I expect it to really strain the harness.
But we arent alike, and we do not expect/want the same out of a built engine.

T

[Bewitched]

1.4 rockers,FK7 or 8

[Dan Ruddock]

[Alstrup]

Alright. Might have to try that in a smaller engine some day.

FK 7 would´nt be a bad choice either if the 1,4 rockers should be used.

T

[mark tucker]

[mark tucker]