Updating my 1915cc, help needed!

[Jesse/DVK]

So guys, winter is around the corner and I want to update my 1915cc.

Current specs:
AS41
DPR 69mm C/W
SCAT I Beams
Mahle pistons + cilinders
Engle FK-8 , CB straight cut
CB lightweight lifters
Manton pushrods
1.4 rockers
123 ignition (009)
1 1/2inch merged header
041 heads 39x35.5 (small porting)
Weber 48 IDA's

Gearbox is a built one with weddle sidecover, superdiff, SAW axles, 4.12 R/P . 3.78, 2.06, 1.04, 1.44.

Looking to upgrade my heads, exhaust and ignition.

Exhaust I would like to have a A1 header + muffler (only 1 3/4 inch?)

Igntion Petronix Ignitor 2 or CB Perf. Magnaspark 2? Any difference?

Heads.. don't have clue which to get? Steve Timms? CB Wedgeports? Is 160-170 bhp possible??

Thanks!

[Jim Ratto]

I always suggest Jeff Denham for headwork, as I am sure anybody else that has dealt with Jeff would. You might ask him about his non-welded 40mm or 42mm x 37.5mm, like he did for Harry. They would keep air speed up (good thing for stock stroke motor with big carbs) and run cool. I don't think you need a 1-3/4" header, I'm sure the 1-5/8 would better suit your displacement and keep torque band nice and wide, yet still breathe up top.

[alex d]

or just stroke it 

[Zach Gomulka]

or just stroke it 

ding ding ding!!

[Jesse/DVK]

  I just like to get the most out of streetable sub 2 liter .

I just contacted Jeff for his advice.

[Jim Ratto]

I just like to get the most out of streetable sub 2 liter .

I just contacted Jeff for his advice.

I like your thinking.

[Diederick/DVK]

never go the easy way, right?

[Jesse/DVK]

A pair of 44x37,5 welded heads should do the trick according to JD.


  

[GreenTom]

160 ouof 1914 with small heads won't be a easy task.
my fried's 1914 with 40x35,5 los banditos ported with about 9ish:1 CR C45, and as I remeber 1,1:1 on 40 DRLA's ,1 5/8 merged VWSpeedshop  header with 2,5" turbo muffler of VWSS also did 127HP and 154 Torque.
here is he graph.


I use Pertronix distributor with Ignitor II and flametower I coil (the car abowe has the same as me but ignitor I). Works really grate smooth and powerfull.

[lawrence]

Cool thread! Did Jeff Denham give any recommendation on camshaft and compression ratio? You may want to consider the 1 5/8s A-1 sidewinder. It looks good and from what Tiger says it make just as much, if not more, power than a standard merged exhaust. The magnaflow mufflers they sell are nice too! Talk to Tiger he will set you up. 160 hp is definitely possible. Let us know how things progress. I really like 1914s as well.

I have had good luck with the Mallory Unilite distributor and VI-AL igniton box, but it is important to get the proper coil for this setup. At first I had a "standard" liquid filled coil mounted on the case. Bad idea! The bakelite top cracked and the cooling fluid leaked out. Excessive heat or vibration could have caused this, Im not sure. I called Mallory and they told me I had the wrong coil, so they sent me the correct one. Its a small coil pack with aluminum heatsink fins. Its an awkward size, so I mounted it underneath the parcel tray above the transaxle.

[Jesse/DVK]

Mm, I really don't like the look of the sidewinder. It's not a Cal-look exhaust to me . JD, said that 180hp is possible with the FK-8 and his heads . Using a 1 3/4 inch lowdown header.

Anyone knows if my Berg traction bar will still fit with the lowdown header?

Mallory is also an option!

[Rennsurfer]

I agree with Jim... the 1 5/8" diameter would suit your engine very well.

Mm, I really don't like the look of the sidewinder. It's not a Cal-look exhaust to me .

To each their own, but this is exactly why I had one made. I hate rules.

[Felix/DFL]

The power ALWAYS lays in the head(s). Think about it it`s ambiguous 
When you mount a low down header you can`t drive dual packs that fit under the car...
Total seals (2nd) would even be an option to think about.
And don`t forget to open up the manifolds top 2 bottom.

Cool thread! Did Jeff Denham give any recommendation on camshaft and compression ratio? You may want to consider the 1 5/8s A-1 sidewinder. It looks good and from what Tiger says it make just as much, if not more, power than a standard merged exhaust. The magnaflow mufflers they sell are nice too! Talk to Tiger he will set you up. 160 hp is definitely possible. Let us know how things progress. I really like 1914s as well.
I have had good luck with the Mallory Unilite distributor and VI-AL igniton box, but it is important to get the proper coil for this setup. At first I had a "standard" liquid filled coil mounted on the case. Bad idea! The bakelite top cracked and the cooling fluid leaked out. Excessive heat or vibration could have caused this, Im not sure. I called Mallory and they told me I had the wrong coil, so they sent me the correct one. Its a small coil pack with aluminum heatsink fins. Its an awkward size, so I mounted it underneath the parcel tray above the transaxle.

Never mount the coil to case or motor...The vibrations kill the coils quick.
I drive a Mallory 29440 (really like the look/ like old rubber batterys) with an 009 & Ignitor and Mallory Hyfire 6 and are pleased with it.

Coil is mounted with rubber dampers on the sidewall, Mallory-box under the rearseat even rubber mounted to get away the vibrations.
No Probs so far.

Have fun updating an engine is always nice!

[Jesse/DVK]

Thanks for the replies guys. I won't use dual packs I will use the lowdown muffler with it. But will a Berg traction bar fit?

My coil is mounted to the firewall using a jaycee mount and rubbers so should be fine. Really lookin forward to update the engine this winter and run some better numbers next year on DFL 402 and DDD

[ugly duckling]

so is somebody doubting my word that it wouldent make 180FWhp . there is no reason why it wouldent. UD .

[ugly duckling]

it would be nice if you had some 1.6 rockers to go with your 380+ cam lift. 611total is a more  lift. a 1915 can make a 100hp on stock heads NO PORTING with a good 3 angle valve job blended slightly with a BABY cheater cam. you've got the BORE that's whats important. just my two bits . UD .

[DKK Ted]

I agree with Jim... the 1 5/8" diameter would suit your engine very well.

Mm, I really don't like the look of the sidewinder. It's not a Cal-look exhaust to me .

To each their own, but this is exactly why I had one made. I hate rules.

AMEN, Mark, rules are meant to be broken. Besides the Sidewinder IS a cool exhaust. Sometimes mixing old with new is ok. 

[DKK Ted]

Mm, I really don't like the look of the sidewinder. It's not a Cal-look exhaust to me . JD, said that 180hp is possible with the FK-8 and his heads . Using a 1 3/4 inch lowdown header.

Anyone knows if my Berg traction bar will still fit with the lowdown header?

Mallory is also an option!

Jeff is right, I got a 180+ with my K-8 way back, and I think you can use a traction bar, works with s small spacer, thats what Tiger told me with my first Lowdown system, but ended up using a kafer bar type set-up instead, works really well, no wheel hop at all.

Ted