1915cc Engine Combo? - Now Building

[allamaabroad]

Looking for advice on a combo that's starting to come together for my super beetle. Here's what I have.

AS41 case, full flowed, case savers
DPR CW 69mm crank .010 mains, .020 rods
Stock Rods
AA 69x94 P&C's
Empi Straight Cut Gears
Double thrust cam bearings, steel backed mains
HD 26 oil pump
Full flow oil pump cover
C Moly pushrods
HD Single springs
Bolt together 1.1:1 rockers w/elephant feet
043 heads (slightly larger than stock valves, will probably port and polish along with 3 angle valve job and new guides)
Stock Heater boxes (I NEED GOOD HEAT)
1 3/8" header possibly with High Mount Hideaway
Dual 40 IDFs with CB manifolds and linkage, Velocity stacks
Bolt on valve covers
36hp style shroud, alternator, OEM tin.

Does that all seem like a good fit for each other? I'm undecided on a cam so far, but it'll probably be an Engle W110 or W120 with matching lifters. I want to keep my stock heater boxes since they work really well and aren't expensive, this car is driven through winter so heat is important.

Any suggestions/comments/concerns?

Also, on a side note, does anyone happen to know the correct length crossbar for a CB linkage set up? This is a stock width engine with CB offset manifolds and filters and 40 IDFs
_________________
Dennis - 1973 Super Beetle ('16-'21)
Debbie- 1970 Baywindow Bus ('21 - Present)
Tin top camper/adventure bus

2180 TW: CNC Panchitos, Beehives Done Right, Web 163, Ultralight Lifters, 1.3 Rockers, CSP Python, Custom Speeduino EFI Conversion with 40mm Throttle Bodies

Distributors are lame

I have a really hard time leaving things alone...

Innovative and affordable engine management systems and EFI conversions for your Vintage VW
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[Rome]

Generally OK. Do you know the exact valve sizes on those 043 heads? Reason I ask is that the 1 3/8" header size would be best for the exhaust valve being no larger than 32mm.

If you choose the Engle 120 cam, it should be run with dual valve springs. Is your head cut for dual springs? If not, then I'd recommend a cam for single HD springs. Although I've not used it and therefore have no experience, the Webcam 163 is described as between the 110 and 120 but still utilizing single springs.

Straight-cut cam gears would not be needed on this engine, IMO. Stock ones will be sufficient, especially when you are going to use single HD valve springs.

Do you know the venturi size on the Webers? If you have the carbs already, you can look down any of the throats and hopefully read the venturi size cast into the top. Examples would be 28, 30, or 32.

The CB hex crossbar length is dependant on the type of intake manifolds you have. You can get manifolds that position the carbs slightly closer to the narrower 36hp fan shrouds than on stock shrouds. Difference is the angle at the base (where manifold attaches to head) and at top. Such a manifold is "steeper"/straighter than ones for a stock shroud so that the crossbar would be shorter. I have a hex crossbar from a stock-shroud dual-port engine with conventional manifolds, which is 21.0" wide. Many years ago I bought a parts Beetle that had a 36hp narrow fan shroud and cheapie CB hex kit that had plastic instead of aluminum arms that mounted on the hex bar and went to the down-rods. That bar is 20.5" wide.

[67rustavenger]

Expect about 104HP from that combo.

The limiting factors are the cam, carbs, and exhaust.

What is your expectation of HP for your build?
And what is the intent of the build?
Weekend driver? DD? Light to light Mustang surpriser?

More info is needed.

Good Luck.
_________________
I have learned over the years.
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Buy Once, Cry Once!

There's never enough time to do it right the first time. But there's always enough time to do it thrice.
GFY's Xevin and VW_Jimbo!

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Not a fan of the 110, or 120. Had a 110 in a 1776 that was similar with a little bigger heads, and switched to a Crower 61004 on a refresh, and it was night/day different. The Crower pulled from idle, and about 1k rpms farther than the 110. With the smaller heads, I’d go to a 61003.

[fabo]

Cb straight cuts
Web163
HD alloy push rods...
Good single springs
1 1/2" exhaust with 2" outlet... Most are too big like 2.5" or something...

[allamaabroad]

This car is my daily driver, though I wouldn’t mind being able to surprise some mustangs here an there. As far as my selections go, I’m trying to stay away from buying bigger heads and exhaust and what not because once you buy one thing, it all kinda snowballs from there. I have access to all the tooling and machines to do all the machine work and the heads and everything, so this is just a sweep the floor motor for me.

Carbs currently have 28mm vents, but I can swap them out to whatever is more suitable.

As far as the hex bar goes, I’m have CB offset style manifolds. The carbs came with the CB linkage kit and everything but the guy I bought it from no longer had the cross bar. I just don’t want to order the wrong one.

What kind of alloy pushrods? I already have these stock length c moly pushrods just sitting around.
_________________
Dennis - 1973 Super Beetle ('16-'21)
Debbie- 1970 Baywindow Bus ('21 - Present)
Tin top camper/adventure bus

2180 TW: CNC Panchitos, Beehives Done Right, Web 163, Ultralight Lifters, 1.3 Rockers, CSP Python, Custom Speeduino EFI Conversion with 40mm Throttle Bodies

Distributors are lame

I have a really hard time leaving things alone...

Innovative and affordable engine management systems and EFI conversions for your Vintage VW
Visit https://debbiesaircooled.com/

[Alstrup]

1914, with stock heater boxes, no need for more duration than the Web 163.
The Crower is a split dur cam, with split the wrong way. Well at least if you want torque. Those types of cams will rev high, but they are quite dirty out tof the exhaust pipe. On the other side, if you have an engine with "limited" exhaust there is definitely an idea of using such a cam.

1914, daily driver. Tims Super stock ported. 9-1 CR. Web 163, maybe with 1,25 rockers, or FK42 w. 1,3 rockers. NO friggen straight cuts. (In a month you´ll be so glad you did´nt use them) 40 IDF´s w. 30 mm venturies. stock heater boxes. Regular 1 3/8" header with a cone type outlet to muffler pipe and a good 2" expansion type or free flow muffler and you will be in the 120 hp area with loads of usable torque.

[allamaabroad]

[Alstrup]

Well, on that account we disagree wildly. I never use straight cuts on the street up to, and with a Web 86B unless the customer specificly asks for it. No problems, not even on nippy bus engines that covers a lot of miles. I have even used normal helical type gear on a Web 86C, but I cheated a little, with Pieper lifters, Aluminum PR´s, outer CB 650 springs and Ti retaners. Revs clean to 7200 where I shut it off.
That said, some cams are so agressive on the ramps that straights are a good idea, but those cams are - again - not something I would use in a street engine. Take for instance the everso popular W110. In a given set up it will rev to 6500 rpms before valve float. Take the same valve train and put it on top of a Web 163 and it will rev clean to 6900 AND make more usable power, AND be milder on the valve train. CB has some cams in their range that are really good too.

With the Tims SS heads. Sure, you can copy all you want. Who knows maybe you can make it even better.

T

[jpaull]

I would use stock gears before using empi straight cuts. The 2515s with the big peanut shaped holes are just scary. There have been reports of many of these Magnum copies not being straight and hole areas collapsing. If you want straight cuts, I would get real magnums from Brothers or CB's straight cuts.

[allamaabroad]

[allamaabroad]

Just an update on this thread, turns out the heads I have are 39x32 041 heads. What are people's thoughts on these?

Also, I feel pretty well decided on either the web 163 or web 110, both just on 1.1 rockers because that's what I have already, but maybe I can find some 1.25s somewhere.
_________________
Dennis - 1973 Super Beetle ('16-'21)
Debbie- 1970 Baywindow Bus ('21 - Present)
Tin top camper/adventure bus

2180 TW: CNC Panchitos, Beehives Done Right, Web 163, Ultralight Lifters, 1.3 Rockers, CSP Python, Custom Speeduino EFI Conversion with 40mm Throttle Bodies

Distributors are lame

I have a really hard time leaving things alone...

Innovative and affordable engine management systems and EFI conversions for your Vintage VW
Visit https://debbiesaircooled.com/

[74 Thing]

IMO too large of intake for stock VW heaterboxes

[jeffrey8164]

[Alstrup]

[allamaabroad]

[Alstrup]

The regular hideaway that comes with a 1 3/8" system is not good for more than 80-85 hp before it becomes a restrictor. You could take a hideaway muffler from a merge header and modify it so that it hooks up wiith the small header. That muffler is good for 135ish hp.

The 61004 will work fine with Scat HD sgl springs, cromo retainers & 0,035" cromo push rods.

If you keep the stock heaterboxes there is no idea in going more aggressive on the cam. You will only get a narrower powerband. If you can´t get it out you can´t get it in.
T

[allamaabroad]

Perfect. What lifters do crower cams like to be run with? I can get a great deal on Engle lifters or get SLR'd stock lifters for a great deal as well. I'm pretty unfamiliar with crower but seems like you have a decent amount of experience with them to know what it'd like.
_________________
Dennis - 1973 Super Beetle ('16-'21)
Debbie- 1970 Baywindow Bus ('21 - Present)
Tin top camper/adventure bus

2180 TW: CNC Panchitos, Beehives Done Right, Web 163, Ultralight Lifters, 1.3 Rockers, CSP Python, Custom Speeduino EFI Conversion with 40mm Throttle Bodies

Distributors are lame

I have a really hard time leaving things alone...

Innovative and affordable engine management systems and EFI conversions for your Vintage VW
Visit https://debbiesaircooled.com/

[Alstrup]

It comes down to the cam blank it is ground on. Get the cam first, find out what blank it is, order lifters then.
T

[weasel_ugs]