mmmm Dynojet

Add how-to's or talk about hi-end engine mods for the performance minded types.

Moderators: kamzcab86, CalAltaDubber

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PDX Cabby
The Living Bentley Manual
Posts: 523
Joined: Tue Dec 30, 2003 12:51 am
What year is your cabby?: 1985
Do you own a Cabriolet?: Yes
Location: Portland, OR
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mmmm Dynojet

Post by PDX Cabby »

alright
nothing impressive but the numbers are in

Image
(click for full size. dialup will take about 2 minutes to load)

for those that just want the numbers:
88hp @ 5300
98ft-lbs @ 2600
estimate 103hp/115# at the crank (17% drivetrain loss)

very flat 14:1 AF across the range

the motor:
overbored JH at 1.9L
8.5:1 compression
G grind
VWMS fuel distributor
OE style dualdowns to catless TT 2.25"


i'm awaiting the raw data files to come in email to give better/clearer graphs
85 Cab - 1.9L 8v, g-grind, euro dual downs to TT race w/ Borla, VWMS fuel dizzy, 2H tranny with 5th gear swap, TT short shift, FK 60/40, 15" BBS RA, rear disks... begging for boost...
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Calimus
Grand High PooBah
Posts: 2892
Joined: Mon Sep 02, 2002 11:40 pm
What year is your cabby?: 1989
Do you own a Cabriolet?: Yes
Location: Cartersville, Ga

Post by Calimus »

thats not bad at all. Figure your basicly getting to the wheels what the engine produced at the crank in OEM format. I'd take the rocco to the dyno, but I think my tires @ss 16v would put down numbers below a stock 8v at this point :P
16' Challenger ScatPack
05' Yamaha FJR1300
02' Honda VTX 1800C
User avatar
PDX Cabby
The Living Bentley Manual
Posts: 523
Joined: Tue Dec 30, 2003 12:51 am
What year is your cabby?: 1985
Do you own a Cabriolet?: Yes
Location: Portland, OR
Contact:

Post by PDX Cabby »

lol
yeah
i keep telling myself the same thing
"i've made up for the original drivetrain loss"
85 Cab - 1.9L 8v, g-grind, euro dual downs to TT race w/ Borla, VWMS fuel dizzy, 2H tranny with 5th gear swap, TT short shift, FK 60/40, 15" BBS RA, rear disks... begging for boost...
1lowcab
DropTop Pimp
Posts: 1809
Joined: Fri Apr 25, 2003 12:42 am
Do you own a Cabriolet?: Yes
Location: mt. vernon, ohio

Post by 1lowcab »

not bad at all :thumbup: time to bump the compression
up, get a bigger cam and a little P+P job.
If you can't beat them, drop the top and pimp by 'em!

85 Mercedes 500SEL grey market euro
Bunch of GM crap
In need of a VW lol
NordTexan
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Joined: Fri Feb 18, 2005 4:20 pm
Do you own a Cabriolet?: Yes
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Post by NordTexan »

New to the group, but wanted to comment on Dyno results. I am trying to make a decision as to which direction I want to go with a build up. Are you happy with what you feel when you stomp the gas and take off? I have been pushing around buying an A1 cabby and doing the typical 2.0l 16v swap or stepping up for the overweight Cabrio and supercharging it. For all your efforts/costs, was your project worth it?
Trying to get back into a bunny.
http://www.cardomain.com/my/garage
bubster007
Posts: 177
Joined: Sat Mar 05, 2005 1:59 am
Do you own a Cabriolet?: Yes
Location: Lawrenceville/Atlanta GA

Post by bubster007 »

NordTexan,
Welcome to Topless and I am not going to answer your question directly but... I have a stock 91 Cabby and the GTI engine is more than enough to satisfy me. I have owned and abused some of the most extreme horsepower animals that you could ever imagine all my life. I have always had a need for speed and I have always been an extreme adrenalin junkie. I have had it all in stunt planes, racing riverboats and quartermile dragsters only to mention a few. Now I am 50 and I drive a cheerleadermobile. But you know what. The last years of the Cabby A1 really were come great cars just in factory stock form. If you try to do anything more to the stock form of the engine you pretty well run into a brick wall. If you are going to go for the engine swap, they are very forgiving and most everything is basically bolt in. I would suggest finding a car that has been on its top or a car that has been T-boned and basically transplant the Cabby body onto the engine/drivetrain of your choice/dreams. You can go overboard very easily and Audi is probably your best donor for the money. You can find some great Audi's to strip and they make some serious displacement options compared to the stock Cabby. All that said, be careful what you wish for, you might get it. I have a friend that has a 426 Hemi in his and it did not turn out to be a daily driver but it does make a great milkshake in the glovebox.
92 Cabby Triple White...de Bubster
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BigDaddy90Cabby
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Location: Corpus Christi Texas
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Post by BigDaddy90Cabby »

Ya What He said... Damn.. looks like another texas in and out!! oh well..
Jimmy
1990 Cabby
Corpus Christi, TX

http://www.cardomain.com/id/bigdaddyjimmyjam
"That's funny, I don't care who you are, that's funny!"
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