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Mon Sep 06, 2010 4:14 am

so you say single port motors wont run . read this i built a single port motor for drag raceing only ... i got tired of people here on samba saying a single port motor wont run ..or dont use single port heads .. i built this motor with what some would say is all the wrong parts for a drag race motor .and i am tired of hearing guys on samba say you cant make a single weber or del run well they allways say run dual carbs ... i used stock crank stock rods stock case 85.5 pistions engle 120 cam single port heads ported by me .. dual springs SS valves stock size... cut the heads for 10.1 cr 40 del carb single carb ... dds signle port end castings... i ran a gen and fan... headers stock fly wheel .. i put this in a drag car thats 1,500 lbs... took it to larrys vw show here in ohio this week end.... ran a best time of 9.41 at 69 mph 1/8 mile thats a 15.14 in the 1/4 mile i shifted at 7,000 rpm pulled the frount end up in the air when i left the line... you can have fun for under $1,000.00 in a motor ...i beat a lot of dual port motors . i ran pro class in have not gotten the motor jetting right yet... but i will... it will run faster needs more tunning. it was the first time out for this motor did not have the time before the race to dial it in ..jetting is not right yet i hagve 180 airs 188 mains dels like big main jets lol people would come over to look at my motor and shake there heads ...they could not belive it was a single port motor ..that ran that well my point is you can build a sigle port motor that will run well ... you can run a single port motor on the street maybe with a 110 engle cam 9.1 cr a del single 40 carb god a love del carbs ...they do the job well ...you can run a stock crank but i would not go over 5,000 rpm for the street .. a stock crank will last for drag raceing only... AT 7,000 RPM ...I HAD ONE THAT I RACED THAT WENT 5 YEARS BEFOR IT WENT BAD lol its been fun building a under dog motor next i am going to take it a part and put a set of 92s thick wall clys &pistions up the cr to 11to 1 take the 30mm venturis and run no venturis ( C Berg trick i learned ) yes dels will run with out venturis i have done it in the past and it works great for drag racing cheap way to get a bigger carb out of a 40 del lol spencerfvee

Mon Sep 06, 2010 5:34 am

Not Bad for only 1585cc SP :lol:

Mon Sep 06, 2010 5:58 am

I have a SP 1600 engine and i have been looking to do some cheap mods just until i can afford a new engine build. I just want better acceleration and the ability to hold 75mph with out the engine sounding like it's giving all it has! This will be for a street buggy probably 1200-1800lbs at it's heaviest!

What can be recommend to stay under $1000 bucks

Mon Sep 06, 2010 6:29 am

what kind of drag car is it? 1500lbs is very lightweight.
up to about100hp the single port herads flow nearly the same like the DP heads.
in my single port 36hp engine i shift at the moment at 6800RPM and its 1192cc + street driven.
over 100ps it becomes more and more hard to ceep up with DP.
any pics from the engine and the car? sounds very nice and like its alot of fun.
wishes from germany

Mon Sep 06, 2010 6:52 am

...hi i dont know every thing about single port motor.. but i do know what worked for me when i drove single port motors on the street . i just sold my buggy so i know what your into on top speed first off what size tire are you running if you have 30inch tall tires its going to be hard to do anything to make it run better with a single port motor i had to find a wide set of tires that were 25 inches tall and still looked good on my buggy just putting the tires on my buggy made it run so much better on the open road . i know every one runs the dual headers on there buggys but a good 1 3/8 or 1 1/2 inch 4 into one header will give better power ..going to a 009 dizy will help and jetting your carb i used to run a 130 to 132 main jet in the 30 pci stock carb allso run a stock air cleanner if you can it has a 5inch stack built into it the carb will run lean at high rpms because of fuel fog which stands above the carburetor inlet at high rpm thats why you allways see guys running velocity stacks on a single carb motor on my buggy i had to use a old bus air clenner with a K n type air filter on the end of it if you have the money buy a set of dual broso solex carbs there are a lot of them out there with single port intakes ( k dogs ) carbs or a weber progressive carb empi sells a set of end castings for single port motors that you can run with the intake manifold for a weber progressive ..this should help you get the motor running better you must remmber the vw bug only had a top speed of 75 mph on the single port motors back in 1967 to 1970 so you might be asking your motor to do something it cant do lol the best top sped i got out of my manx bugy with a 1600cc dual port motor was 82 mph down hill lol try the tires first go smaller good luck spencerfvee... tcarter wrote: I have a SP 1600 engine and i have been looking to do some cheap mods just until i can afford a new engine build. I just want better acceleration and the ability to hold 75mph with out the engine sounding like it's giving all it has! This will be for a street buggy probably 1200-1800lbs at it's heaviest!

What can be recommend to stay under $1000 bucks

Mon Sep 06, 2010 9:10 am

What RPM's should i be seeing I just put a tach on and a new 12v blue coil and 4th gear it stays at about 4k-5k is this too high

oh yeah i have a 009 distributor and a 1/1/5 merged comp stinger

Mon Sep 06, 2010 10:40 am

....hi the race car me and my best friend built in 1969 to race in the I gas and H gas class we raced it till 1985 then raced a vw dragster till 2005 we sold the dragster and brought back the bug to race in the gasser vintage races .here in ohio we race against chevys fords and any old gasser its a lot of fun the bug has a all fiber glass frount end... fiber glass rear fenders its a 1964 bug alum fire wall very light .. your 36hp motor sounds like its one fast motor great job what did you do to it to make it put out 100 hp ? i am going to post picture later on of my motor ...i would very much like to see pictures of your motor... i think it would be help full to others for you to post how you got 100 hp out of your motor and for you to get 100 hp out of a 36hp that takes a person who knows what there doing.... its fun to be a under dog and race a guy and beat him with a 40hp or 36 hp motor .i herd in cal. they have a drag race class for 36hp motors and i herd guys are doing wild things to the motors like turbos super chargers ..keep up the good work spencerfvee...................................................................................................................................................... grueni wrote: what kind of drag car is it? 1500lbs is very lightweight.
up to about100hp the single port herads flow nearly the same like the DP heads.
in my single port 36hp engine i shift at the moment at 6800RPM and its 1192cc + street driven.
over 100ps it becomes more and more hard to ceep up with DP.
any pics from the engine and the car? sounds very nice and like its alot of fun.
wishes from germany

Mon Sep 06, 2010 10:49 am

hi from what i see from looking at your buggy your tires are tall and it looks like your running a swing axal trans that maybe is a 4:125 gear ..are you sure you have the tack hooked up right ..for you to be running 4,000 to 5,000 rpm in high gear with tires like you have on your buggy sounds to me that your tack is off .. the motor should be running 3,200 in high gear thats what my buggy ran with a 4:125 trans and 25 inch tires some thing is not right .. i see you have room for a stock air cleanner check your tack out make sure its set up for a 4 cyl some tacks have a switch on them to set the tack for 4cly or 8 cyl or 6 cyl then some have wires you have to cut to use with a 4 cyl motor spencerfvee ..................................................................... tcarter wrote: What RPM's should i be seeing I just put a tach on and a new 12v blue coil and 4th gear it stays at about 4k-5k is this too high

oh yeah i have a 009 distributor and a 1/1/5 merged comp stinger

Mon Sep 06, 2010 11:18 am

spencerfvee wrote: hi from what i see from looking at your buggy your tires are tall and it looks like your running a swing axal trans that maybe is a 4:125 gear ..are you sure you have the tack hooked up right ..for you to be running 4,000 to 5,000 rpm in high gear with tires like you have on your buggy sounds to me that your tack is off .. the motor should be running 3,200 in high gear thats what my buggy ran with a 4:125 trans and 25 inch tires some thing is not right .. i see you have room for a stock air cleanner check your tack out make sure its set up for a 4 cyl some tacks have a switch on them to set the tack for 4cly or 8 cyl or 6 cyl then some have wires you have to cut to use with a 4 cyl motor spencerfvee ..................................................................... tcarter wrote: What RPM's should i be seeing I just put a tach on and a new 12v blue coil and 4th gear it stays at about 4k-5k is this too high

oh yeah i have a 009 distributor and a 1/1/5 merged comp stinger

Yeah my tires on the rear is 255/60/15 which is Overall Diameter: 27.04 in

I will check in to the tach setup in a few minutes. Now i'm wondering lol

Mon Sep 06, 2010 11:46 am

spencerfvee wrote: ....hi the race car me and my best friend built in 1969 to race in the I gas and H gas class we raced it till 1985 then raced a vw dragster till 2005 we sold the dragster and brought back the bug to race in the gasser vintage races .here in ohio we race against chevys fords and any old gasser its a lot of fun the bug has a all fiber glass frount end... fiber glass rear fenders its a 1964 bug alum fire wall very light .. your 36hp motor sounds like its one fast motor great job what did you do to it to make it put out 100 hp ? i am going to post picture later on of my motor ...i would very much like to see pictures of your motor... i think it would be help full to others for you to post how you got 100 hp out of your motor and for you to get 100 hp out of a 36hp that takes a person who knows what there doing.... its fun to be a under dog and race a guy and beat him with a 40hp or 36 hp motor .i herd in cal. they have a drag race class for 36hp motors and i herd guys are doing wild things to the motors like turbos super chargers ..keep up the good work spencerfvee......................................................................................................................................................

that sounds like alot of fun , like a kind of vintage racing stuff.
100hp is the goal at the moment. the output up to 100hp mark that i mean is for 35,5/32mm valves in typ1 SP and DP heads over that mark it is more and more hard keep up with DP . 36er's are way more restriictive than 40hp heads. 29,6/28,1mm vales stock.
what should i say... it is to much at the end. there is not much that i not changed most stuff is handmade...changed lifters, build own ratio rocker system,create own cam for the radius style lifter, heads, supercharger system...everything. this engine is 27mm smaller as a stock 36hp. output at the moment it is on the save side..there is about 20-25% more power in it.
if interested look here:
http://www.thesamba.com/vw/forum/viewtopic.php?t=384208
there is more time in that thing than in the most turbocharged 2332cc typ1.

but back to topoic...waiting for the pics ;) also would love to see the car too.
i really like single port engines and the competition to make power with them.

wishes
chris

Mon Sep 06, 2010 12:22 pm

.hi my god that motor is so super nice ..great job ..your like me i love building motors my way and i like porting heads and making things work right if you make sure every part is right on you can get hp out of a motor i learned that if you bore the case out 25thousands bigger.. you let the crank find it best place to run by bolting the head on lose then turnning the motor over the crank and rods will aline them selfs with the pistions and make free hp old formula vee trick then i bolt the heads down to 18lbs... i learnned this from jerry long of vanguard ...allso i shim the distributor drive gear to 6 thousand free play and i dont use the spring i fouind out that the distributor drive gear jumps around a lot and changes the timing this makes more hp this is allways over looked in building a race motor .. i allso use timing gears with 0 lash its hard to do but i found out it makes more hp old dean lowery trick super nice talking to you good luck on your motor again great job .......spencerfvee.................................................................................................................................................................................................. equote="grueni"] spencerfvee wrote: ....hi the race car me and my best friend built in 1969 to race in the I gas and H gas class we raced it till 1985 then raced a vw dragster till 2005 we sold the dragster and brought back the bug to race in the gasser vintage races .here in ohio we race against chevys fords and any old gasser its a lot of fun the bug has a all fiber glass frount end... fiber glass rear fenders its a 1964 bug alum fire wall very light .. your 36hp motor sounds like its one fast motor great job what did you do to it to make it put out 100 hp ? i am going to post picture later on of my motor ...i would very much like to see pictures of your motor... i think it would be help full to others for you to post how you got 100 hp out of your motor and for you to get 100 hp out of a 36hp that takes a person who knows what there doing.... its fun to be a under dog and race a guy and beat him with a 40hp or 36 hp motor .i herd in cal. they have a drag race class for 36hp motors and i herd guys are doing wild things to the motors like turbos super chargers ..keep up the good work spencerfvee......................................................................................................................................................

that sounds like alot of fun , like a kind of vintage racing stuff.
100hp is the goal at the moment. the output up to 100hp mark that i mean is for 35,5/32mm valves in typ1 SP and DP heads over that mark it is more and more hard keep up with DP . 36er's are way more restriictive than 40hp heads. 29,6/28,1mm vales stock.
what should i say... it is to much at the end. there is not much that i not changed most stuff is handmade...changed lifters, build own ratio rocker system,create own cam for the radius style lifter, heads, supercharger system...everything. this engine is 27mm smaller as a stock 36hp. output at the moment it is on the save side..there is about 20-25% more power in it.
if interested look here:
http://www.thesamba.com/vw/forum/viewtopic.php?t=384208
there is more time in that thing than in the most turbocharged 2332cc typ1.

but back to topoic...waiting for the pics ;) also would love to see the car too.
i really like single port engines and the competition to make power with them.

wishes
chris[/quote]

Mon Sep 06, 2010 4:28 pm

Do you have before and after flow numbers on the heads? I am think about doing this myself.

Tue Sep 07, 2010 8:33 am

Spencer, maybe you haven't searched enough on the forum but there are tons of SP advocates including Jake Raby and myself.
I have converted all of my cars over to SP just because of the torque curve.
They work well with me because I drive mostly highway miles and if you need to pass someone and your already at 70mph the SP's have the torque to do it much quicker than a DP.
I'm in the process of doing an turbo 1835 with stock DP heads besides larger valves. I will dyno it and then toss on a set of welded D port SP heads I got from Brothers VW and dyno that as well.... I think I'll be pleasantly surprised with the results. I'll post them up as well.
Thanks for posting up your info!

Tue Sep 07, 2010 12:46 pm

i have a 1776sp.
- a little head porting by me done with a old regular drill and a small dremel, -cam 120, a monza mofler
-single 40drla
-009
- c/w crank stock rods

so far 6000miles on it, very abused miles and runs ok from 900-1800
but ones thats hits the 1850 its when unleash up to 5000rpm

i love it,

Tue Sep 07, 2010 12:48 pm

does anyone have any picts of SP heads porting? that will be nice

or SP set ups?

Tue Sep 07, 2010 12:49 pm

does anyone have any picts of SP heads porting? that will be nice

or SP set ups?

Tue Sep 07, 2010 12:54 pm

Tue Sep 07, 2010 1:09 pm

very very nice pictures, on mine i did the intake port, around the valves but i realized thats i forgot to port the exaust port after i put it back together but i have an other set of used SP heads that i got at the bugorama sac this last sunday so i have lots of inspiration and energy to work on the heads,

Kids will be lots of KFC this week cause im using the kitchen for my car

Tue Sep 07, 2010 2:37 pm

The first set I did had JB weld to fill in the places it needed. I could slip in a 32mm valve all the way in the port. These were on a head with 35 x 32 valves.

This is the head on my street/race car. It has 40 x 40 valves. Brothers Machine did all the head work. I told them what I wanted, and they did it. 38 x 42 intake size

Here is what 18.5 psi boost can get you in a 1850 pound car powered by a 2110 singleport . I'm car # 3293

Kevin

Tue Sep 07, 2010 2:42 pm

Brothers VW is THE place to go for single port performance. Hands down.