Hp question

4secrail · Posted: Wed Feb 04, 2015 4:52 pm Post subject: Hp question

Probably a unanswerable question but maybe a estimate by u professional. Here it goes how much hp est. of coarse would my engine make specs r
1915
Fk8
042 heads 53 cc 40x35.5
Ported and polished
8 dowell counter weighted crank
Scat rods
Comp 9.5:1
Dual 44 webers/ 7 in intakes
Any thought or ideas/ estimates would b greatly appreciated. I can tell u it will spin 7500 to 8 all day long clean unless u guys say not to Laughing

Glenn · Posted: Wed Feb 04, 2015 4:55 pm Post subject:

I say not. Maybe 7200 if the heads are done right.
_________________
Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"

Member #1009

#BlueSquare

bugguy076 · Posted: Wed Feb 04, 2015 5:25 pm Post subject:

I say not, too. I don't think anyone could build it to take that abuse.
_________________
Grubby Fingers Racing
1976 Drag Bug
1967 Street Bug

raul arrese · Posted: Wed Feb 04, 2015 5:29 pm Post subject:

I guess it will depend on the heads and exhaust , ported and polished ?? anyone can port and polish but who's doing them ?? and 8,000 all day ??? I laugh just writing it ..
_________________
" Hot vw feature , may 2014 issue "
" 2013 Bug Jam class winner "
" Bug Jam best motor and best paint "
" 2013 Lakeland Classic Best of Show "
" 2014 Show and Shine , First in class "
"
Like my facebook https://www.facebook.com/pages/Raul-Arrese-custom-fabrication-and-performance/1832968110262608

4secrail · Posted: Wed Feb 04, 2015 5:31 pm Post subject:

I guess I need to curve my driving habits. The guy that built races a karmin Gia around here by the name of Twigg I don't know that's why I'm asking. It was built in1988 according to receipt I found. Oh well any estimates on hp. I know sounds crazy to me too. I feel even crazier telling it to u guys makes me look like a real work of art on the other hand after contacting builder he says not on heard of. Guess that's why I'm asking oppions

mcmscott · Posted: Wed Feb 04, 2015 5:41 pm Post subject:

Depends on the dyno. On my Stuska you will probably see 130-150
_________________
There are no stupid questions, only stupid people,

68 Ghia
67 T-1
65 Notch
02 Mexican beetle
74 Thing
15 Long travel rail
07 Nomad
05 f-250

Glenn · Posted: Wed Feb 04, 2015 6:02 pm Post subject:

vwracerdave · Posted: Wed Feb 04, 2015 6:07 pm Post subject:

The FK-8 stops making power around 6500 RPM's. If your spinning 8000 RPM's you tach is wrong.

125-135 HP
_________________
2017 Street Comp Champion - Thunder Valley Raceway Park - Noble, OK
2010 Sportsman ET Champion - Mid-America Dragway - Arkansas City, KS
1997 Sportsman ET Champion - Thunder Valley Raceway Park - Noble ,OK
Featured in Dec. 2001 HOT VW's Magazine page 63

Watch my racing video's http://www.youtube.com/user/okvwracer/videos

GTV · Posted: Wed Feb 04, 2015 6:53 pm Post subject:

rrcade · Posted: Wed Feb 04, 2015 7:04 pm Post subject:

mcmscott · Posted: Wed Feb 04, 2015 7:05 pm Post subject:

4secrail · Posted: Wed Feb 04, 2015 7:53 pm Post subject:

Thanks for all the input u guys r a great help. I did do research on cam and found same specs that's what made me seek professional knowledge being I'm new to vws I'm trying to figure out my best shift points for performance also wasn't sure if other specs heads exhaust and so on could alter the cam rpm range. I don't want to sound dumb just trying to gain knowledge and learn a new breed Confused

mark tucker · Posted: Wed Feb 04, 2015 8:04 pm Post subject:

modok · Posted: Wed Feb 04, 2015 8:16 pm Post subject:

Short strokes will rev higher.

I'd limit it at 7k tho. Shifting at 8k the vw engine lives short life. Shocked

bugguy1967 · Posted: Wed Feb 04, 2015 9:59 pm Post subject:

Heads can't flow enough with the lift that an FK8 with 1.4 lifts to. With 42 or 44x37 heads, and more compression, 170 HP would be reachable. Seen it.
_________________
"A petrol engine can start readily, run smoothly and give every appearance of being in good order, without necessarily being in good tune." - Colin Campbell, "The Sportscar Engine"

Quokka42 · Posted: Thu Feb 05, 2015 3:38 am Post subject:

The cam won't magically limit your rpm to any number, and in fact it is not uncommon for your shift point to be well above your peak HP in a well built engine - the trick is to change when the torque drops off an equivalent amount to what it will be at the rear in the next gear. Your engine characteristics, including the rpm peak HP is made, depend on a number of factors other than your cam though the biggest influence is the heads. If it was built to handle 8000rpm it is safe to take it there, but higher rpm always equate to shorter engine life.

I think you should invest in a dyno run, not so much for the bragging rights but to determine your best shift points.
_________________
There has only ever been one man who was perfect, and they nailed Him to a cross.

4secrail · Posted: Thu Feb 05, 2015 6:40 am Post subject:

That makes sense I'm going to try to find a local Dyno and actually test all this knowledge to find peak performance it's great to be able to talk to experienced people on these motors and get a understanding of these questions thanks a lot guys

mcmscott · Posted: Thu Feb 05, 2015 8:29 am Post subject:

4secrail · Posted: Thu Feb 05, 2015 9:08 am Post subject:

What octane gas would u guys recommend I've ran 93 but also 100. On a side nite u guys ever try or think of high compression and e85?


Hello! Log in or Register \| Help \| Donate \| Buy Shirts	See all banner ads \| Advertise on TheSamba.com

Forum Index -> Performance/Engines/Transmissions		Share:
		Print View

	Forum Index -> Performance/Engines/Transmissions	All times are Mountain Standard Time/Pacific Daylight Savings Time
Page 1 of 1