2017 build...horsepower estimates?

[bugnut68]

Okie dokie, here's my forthcoming combo:
78.4 stroke, 90.5 bore
8.5:1 compression
Engle 125 cam, 1.1 rockers
dual 45mm Dellortos
42x37 valves (steve times stage 2 heads)
1-5/8" exhaust

Any ideas on how much power, and what I can expect in the 1/8-mile with a 4.12 '70 IRS gearbox, car weight about 1700 lbs?  Stock gears, too.  Just curious of what my new engine potential may be...

[Hotrodvw]

Do you want a full throttle rating?   

[Jim Ratto]

sounds alot like the Cal Look motor Hot VW's did in mid 1990's that made in the region of 140hp (it was 90 x 78, 125 cam FF heads)

[Zach Gomulka]

Give it more compression!

[bugnut68]

Give it more compression!

I asked Greg Tims about recommendations on compression, either 8.5 or 9:1, and he recommended I keep it around 8.5:1 for pump gas.

[bugnut68]

sounds alot like the Cal Look motor Hot VW's did in mid 1990's that made in the region of 140hp (it was 90 x 78, 125 cam FF heads)

I wish I still had that magazine... I think it was included in All About Performance VW Engines Part II, if I remember right, and I should still have that issue?

[stealth67vw]

sounds alot like the Cal Look motor Hot VW's did in mid 1990's that made in the region of 140hp (it was 90 x 78, 125 cam FF heads)

140hp with the belt and mufflers. It made 162hp with IDAs, stinger and no belt.

[neil68]

My 2017 cc, 42 x 37 044 Ultra Mag Plus CNC, Engle 120/1.25's, 7.9:1 CR,46 mm Kadrons (34 mm vents), 1 5/8" made 131 WHP on the Dynojet (probably 145 at flywheel?), 15.1 seconds in 1/4-mile at 3,300 ft elevation (maybe 14's at sea level?).

[Rennsurfer]

Sounds like fun engine to drive. And, yes... keep the compression where it is. Pump gas high performance engines are awesome. Excellent choice on the cam, too.

[Brother Lovedub]

With those carbs and valves and that cam would 1:25 rockers not help the breathing?

[bugnut68]

With those carbs and valves and that cam would 1:25 rockers not help the breathing?

I'm not completely firm on 1.1's, I was just told they would be easier on the valvetrain than 1.25's.  I'm around 4,800 feet elevation, any ideas on how this will impact the power output?  I'm looking forward greatly to putting this beast together... never had a stroker before.

[bugnut68]

My 2017 cc, 42 x 37 044 Ultra Mag Plus CNC, Engle 120/1.25's, 7.9:1 CR,46 mm Kadrons (34 mm vents), 1 5/8" made 131 WHP on the Dynojet (probably 145 at flywheel?), 15.1 seconds in 1/4-mile at 3,300 ft elevation (maybe 14's at sea level?).

Neil, was that your '68 I saw in the Feb issue of Hot VWs (Great Canadian event coverage)?  If so, I love the car, looks great! 8-)

[donkers]

Almost exactly as I had in my ghia, in the full weight (heavy!) car with same gearbox ratio it ran consistent 14.8s 
edit-est' Hp was around 140
Only difference is I had fk8 and 1.4 rockers

[bugnut68]

Irregardless of numbers, it will be fun... can't wait!

[Jim Ratto]

Irregardless of numbers, it will be fun... can't wait!

good attitude!

[bugnut68]

Irregardless of numbers, it will be fun... can't wait!

good attitude!

I'd like to make up a sticker for my rear window, in small letters, that reads, "No, it's not a damn Porsche engine!"  Lol

[Speed-Randy]

Compression makes power, raise yours to 9.5:1 and run super, it will be fine. Im running the exact same set up except i've got 92's and ida's, it runs fine on 91 octane. Doesn't ping unless ambient temp is 105 degrees or higher

[mcmscott]

I say Twenty!!!

[Hotrodvw]

Ryan, you rode in my 2007cc, it didn't make the #'s you're seeing here.  If yours does, you'll have fun.   

[neil68]

My 2017 cc, 42 x 37 044 Ultra Mag Plus CNC, Engle 120/1.25's, 7.9:1 CR,46 mm Kadrons (34 mm vents), 1 5/8" made 131 WHP on the Dynojet (probably 145 at flywheel?), 15.1 seconds in 1/4-mile at 3,300 ft elevation (maybe 14's at sea level?).

Neil, was that your '68 I saw in the Feb issue of Hot VWs (Great Canadian event coverage)?  If so, I love the car, looks great! 8-)

Yes, that's me...I added some 94 mm Mahle slip-ins, Web 86C, 84 crank and IDA's, so now it's a 2332 cc

Also, you mentioned being at 4,800 ft altitude.  I'm at 3,640 ft (and race at 3,300 ft) and I found 9.6:1 CR was just fine on pump gas with the above 2017 cc...I flycut the heads, which got me into the low 14's and was still a great street Beetle.  Good luck!

[GreenTom]

sounds alot like the Cal Look motor Hot VW's did in mid 1990's that made in the region of 140hp (it was 90 x 78, 125 cam FF heads)

I wish I still had that magazine... I think it was included in All About Performance VW Engines Part II, if I remember right, and I should still have that issue?

I can scan for You that article if You need it. Is it the same number with Mr. Jim Kaforsky's 12 sec 2276?

[Jesse/DVK]

My guess for your HP: two times the half





 

[bugnut68]

My 2017 cc, 42 x 37 044 Ultra Mag Plus CNC, Engle 120/1.25's, 7.9:1 CR,46 mm Kadrons (34 mm vents), 1 5/8" made 131 WHP on the Dynojet (probably 145 at flywheel?), 15.1 seconds in 1/4-mile at 3,300 ft elevation (maybe 14's at sea level?).

Neil, was that your '68 I saw in the Feb issue of Hot VWs (Great Canadian event coverage)?  If so, I love the car, looks great! 8-)

Yes, that's me...I added some 94 mm Mahle slip-ins, Web 86C, 84 crank and IDA's, so now it's a 2332 cc

Also, you mentioned being at 4,800 ft altitude.  I'm at 3,640 ft (and race at 3,300 ft) and I found 9.6:1 CR was just fine on pump gas with the above 2017 cc...I flycut the heads, which got me into the low 14's and was still a great street Beetle.  Good luck!

That's good info to know... I remember even the Bergs said in their instruction book that you can get away with more compression at higher elevation.  I figured that would be another important factor to throw in.

[bugnut68]

Ryan, you rode in my 2007cc, it didn't make the #'s you're seeing here.  If yours does, you'll have fun.   

I was very impressed with how responsive that engine was in its form at the time... can't wait to see how the hairdryer adds to it!

[Hotrodvw]

I think it's gonna be fun.   

[fredy66]

hello

looking at the 2017 looks to be a good street engine.

can i get a Way Whit the 4140 forced 78 crank??

and the rodes can i just the stock or is the I-beam rods ??

what barrels and pistons do i need ??

 ts a street engine for some Fun and long distens driving (finland to SSC)
thanks for the help

[Hotrodvw]

hello

looking at the 2017 looks to be a good street engine.

can i get a Way Whit the 4140 forced 78 crank??

and the rodes can i just the stock or is the I-beam rods ??

what barrels and pistons do i need ??

 ts a street engine for some Fun and long distens driving (finland to SSC)
thanks for the help

I would go with a better rod than stock for sure....stock will take soem abuse, but there is better avail.  90.5 'B' stroker pistons and cylinders to match are what you need. 

[DKK Ted]

Give it more compression!

I asked Greg Tims about recommendations on compression, either 8.5 or 9:1, and he recommended I keep it around 8.5:1 for pump gas.

Ryan, go with 9:1 or even 9.5:1, mine is 9.8:1, no problems on pump gas 91 Oct. bunch of fun. 

[Black Sheep]

Are you dead set on 90.5's ?
Coz I used to run a similar set up 2007 with 1,25's  good for about 130 bhp .
But..... if you go with 94's , would give you 2172 "I think" and up your compretion to 10:1 with some 1'25's and throw in a pair of 48's you got to be up around 170 bhp 
I run 10:1 on optimax pump gas with no problems at all with my 2165 set up 

[bugnut68]

Are you dead set on 90.5's ?
Coz I used to run a similar set up 2007 with 1,25's  good for about 130 bhp .
But..... if you go with 94's , would give you 2172 "I think" and up your compretion to 10:1 with some 1'25's and throw in a pair of 48's you got to be up around 170 bhp 
I run 10:1 on optimax pump gas with no problems at all with my 2165 set up 

I'm definitely sticking with 90.5's... I simply have to stick with what I have, otherwise I will never get this thing built.  lol.  Same goes for 45 DRLA's, IDAs are out of the question for me, plus I've heard Dellortos have much better street driveability.  I basically have the essential components for this built at this stage, so I'm committed to it.