cb performance engine 1776 - up the hp?

You can re-use the case and some of the components you have, but essentially you'd be rebuilding the engine.The pistons/cylinders may or may not be re-usable. Using a longer stroke couterweighted crankshaft will add displacement, and depending on where you want the powerband to be, the cam/lifters and heads may or may not have to be replaced. You need to find an engine builder that can evaluate what you have. Al

Just to add,  A/C will put an additional load on the motor reducing HP somewhat.....

What's the saying? "No replacement for displacement".

If you can find build sheet for original engine you will save a lot of time and $.

You can replace the 90.5 mm P&C with 92 mm slip in P&C to increase displacement to 1835 cc.  These are thinner wall cylinders than 90.5 but should last quite awhile if not abused.  You can also add 1.25 hi-lift rocker arms without even removing the engine. Lightening the flywheel will let it rev quicker --- but not recommended for AC.

AC is going to sap 10-15 horsepower - take that from 65 you currently have and you're back to VW stock.  AC adds to cooling requirements - so at least a larger oil sump is needed or a remote cooler with electric fan.

Anything else requires spitting the case.  A stoker crank is nice but requires case clearancing.  Bigger P&C requires machining of case and heads. 

Thanks for all the input guys. The car already has the dual compressor ac. And the cb performance 1775 is rated at 105 hp. That is before I updated the carbs, so now it is probably 115 .  Quite peppy since the car is only 1700 pounds. and of course the ac is only on on the blistering hot days. Not all the time. Good tip Wolfgang on the build sheet. I should be able to find one. It is really a high quality engine, so I hope to use as much of the original parts as possible ...

Here is CB Performance info on the engine - 

• 1180 - 105 HP 1776cc Builders Choice Engine Kit includes:
• 2241 - Cam Only T-1
  
• 1275 - AS41 Dual Relief Super Case - T-1 & 2 Welded #3, Full Flowed, Cut for 92's
  
• 1289 - Super Race Rods - VW rod journal - 5.400" (set of 4)
  
• 1859 - Maxi 30 Full Flow Oil Pump
  
• 1278 - CB High Performance Case Kit
  
• 1537 - 28mm Ultralight Lifters (set of 8)
  
• 1941 - Rear Main Seal - 13, 15, & 1600cc
  
• 1804 - Main BearingsS STD
  
• 1865 - Rod Bearings T/1 STD
  
• 1525 - Eagle Cam Gear
  
• 1557 - Windage Tubes
  
• 1446 - 044 Special Cylinder Heads (40 x 35.5) Mahle 90.5/92 bore
  
• 1770 - Thin Line Oil Sump - 1 1/2 qt.
  
• 1628 - Chromoly Push Rods - blank end (.035")
  
• 1052 - Super Big Bore Kit, 90.5 x 69mm
  
• 1039 - Teflon Buttons - 90.5mm pistons
  
• 1702D - C Channel Valve Covers (set of 2)
  
• 1999 - 8mm Deflector Plates - fits 13, 15, & 1600cc (set of 2)
  
• 1904 - Case Washer Set
  
• 1424 - Main Bearing Dowel Pins (111-101-123) (set of 5)
  
• 1255 - Rubber-Coated Cam End Plug
  
• 1105 - 69mm 4140 Forged Chromoly Crank
  
• 1303 - Forged Chromoly Lightweight Flywheel - 200mm (o-ring seal)
  
• 1360 - Racing Gland Nut with washer
  
• 1229 - 8mm Chromoly Head Stud Kit - Dual Port
  
• 1849 - Racing Camshaft Bearing Set
  
• 1918 - Crankshaft Gear Assembly Kit w/Racer Spacer
  
• 1684 - Super Stock Rhino Rocker Arms - Complete 1.1:1 Ratio (stock)
  
• 1362 - End Play Shim Kit
  
• 1908 - Case Lock Nut Kit
  
• 1973 - Gasket Set - 13, 15, & 1600cc Dual & Single Port Engines
  
• LABOR-3 - Weld #3 Rear Case Web
  
• LABOR-MC-BB - Machine Case - Big Bore
  
• LABOR-FLOW - Full Flow Case
  
• LABOR-CC-CS - Flycut Heads to 54cc
  
• LABOR-CNC - CNC Combustion Chambers (Mini Wedge Chamber)
  
• HP is rated using Dual 40mm IDF Carbs, 1 1/2" Merged Header. Compression is set at 8:1 using listed parts in kit. Mid Grade fuel is required for this kit.

Many times it's cheaper to buy a new engine and sell the one you have.

A 2110 would be great, but requires machining of the case and heads. It's its basically a complete tear down.

If you deicide to sell as is /running dialog me ...Alan

Alan, If I decide to sell, I will let you know. 

... and so it begins...

...and ends with a 5-speed, Stan.

Terry Nuckels posted:

...and ends with a 5-speed, Stan.

Been there.... and no regrets.

I'd go to 1.25 or possibly 1.4 ratio rockers. The extra lift should push the power band up a little and get you a few extra horses for about $200 and an afternoon's work.

You could go to a 1915 displacement with a set of jugs, and that might up your power by about 8 horses. That's another $400-$500 and quite a bit more labor. Do both things and you should be in the 120-125 hp range, assuming the original spec is close to right and the new parts are all true. 

This won't buy you much (or maybe any) more low-end torque though, and that's what you're really looking for.

For that you need a stroker. The 2110 cc engines that the good builders make tend to be in the 130-145 hp range, and all these guys here consider that the sweet spot. The motors are reportedly durable, rev nicely to about 6k and pull strong down in the 2500-3k rpm range where you want them to. These are a $6k-$7k proposition, usually. So even after selling your old mill (assuming that's the plan) you're going to be into it for $5k, plus or minus. 

That's $5k, net, to get 35 more horsepower and 30 more ft-lbs of torque at 3500 rpm. 

Welcome to the madness, by the way....

My two sense.. Save and build a 82 X 90.5. 

The 1.25 rockers may give you a little pep but not enough to make a difference. The 1.4 should not be bolted on since you don't know the existing valve to piston clearance. Both require shimming the rocker shaft, solid shafts and with the 1.4 rockers most likely different length pushrods.

Thanks guys!
Your comments are confirming what I was thinking.
Right now (post soaking the rings in Marvel Mystery Oil) I have good even compression, upgrade the carbs, did a proper tune-up, etc... , so I bet the thing is pushing 110hp (as advertised by CB Performance).

Next, on to the ball joints and cv joints, then the aesthetics... after all that I will see about the 2110 engine. I have other fast cars, so I might keep this as an "original feel" , like I remember the 356 from my youth... But I an unreasonable car nut too - so who knows.

The madness is where all the fun is. You guys are a big help - with the fun part not the madness part  :-).