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Sat Jul 26, 2008 10:00 am

Hey guys and gals go easy on me. I have a question about my engine I just purchased. I bought a 2110 engine from Brother's Machine. Very pleased with the whole transaction. This is the first big vw motor I have purchased. It is a 94 x 76 with dual 44 webers. I had the lifter bores sleeved like most recommend on here.What is a realistic time for a motor like this in the 1/4. I am finding that 1st gear is useless when getting on it. My dyno sheet shows the power isn't coming on till 3500 rpm. It showed a top horsepower of 147 and torque of 128 at 6000rpm but it just feels slow on the street. I don't know if I am not revving it high enough or what. A friend of mine has a new mustang gt with the small v8 and he just leaves me. It idles great with slight lumpiness and responds with no flat spots but??? Am I being unrealistic about the power or am I too scared to get the rpms up due to not being around cars that don't go till 3500-6000 rpm. They told me the valves were good to 7000. Thanks for any advise or comments...

Sat Jul 26, 2008 10:08 am

importtek wrote: What is a realistic time for a motor like this in the 1/4.

How much does you car weigh with you in it?
What's the gear ratios in your transaxle?
What kind of tires on the car?
What RPM are you shifting at?
How much experience do you have racing?

Sat Jul 26, 2008 11:20 am

High 13's to low 14's.
Thats high start rpm for the power to come on :? What cam?

Sat Jul 26, 2008 11:21 am

Whats the engine combo? Carbs, cam, comp ratio, etc.
The questions RIS posted need to be answered too, with the right gearing you can probably make this come alive.
Also is the ignition and fuel system tuned to the combo, remember the engine can only run as good as its tune up and the components used. Poor ignition and/or fuel system = poor performance.
Now that I said that I will also add that the bore and stroke combo could have been better IMO.
A 82 x 90.5 (2110) combo pulls a ton harder off the line due to the stroke increase and will usually waist a Rustang off the line, maybe thats the engine you hoped for and the reason I refuse to use the 74 and 76mm cranks, They just do not deliver.
Anyway its best to make the most of what you have by optimizing the tune up, I'm sure the build quality is good, brothers is known for good workmanship.

Sat Jul 26, 2008 12:16 pm

The tires on my car are 165 15 on rear 150 55 15 on fronts.. My trans is the stock trans for the car which is 1970 beetle. I am shifting at 5-5500 by my autometer tach.As far as the weight it is a full body sedan with my weight being 198 lbs. The fuel system is a rotary cb pump with an 009 distributor bosch plugs and blue coil. I will have to call for specs on the cam. It has straight cuts and 1.4 rockers. Hbeam rods with 40x 35 port and polished oval ports and a-1 muffler system. I have some race experience.I had a 95 talon turbo that ran low 13/14's and it was a night and day car as far as comparing it to the performance of this.I have no question on the quality of the work but the performance to me is just not where I feel it should be. I hope it is something simple that with a few tweaks here and there someone could point me in the right direction. Thanks again!!

Sat Jul 26, 2008 12:43 pm

I would start by getting the full specs on the engine including port work.
For the tune start with timing at 32* full advance and read the plugs from there for jetting.
At the very least I hope your running dual 40's if not 44's, and the cam has at least 253* dur @ .050" or better and a valve lift of at least .500"+
Let us know what you find.

Sat Jul 26, 2008 1:05 pm

What size cam? U should be really leave'n that lil stanky stang like sh*t! It also wouldnt hurt to have a set of better heads or have those worked up thats where u get your REAL POWER from. Also I personaly would have leaned more towards the 82 stroke to build a 2110 though a friend of mine had a simple 78x92 w/ crazy head work on some nice heads & I'll tell u what couldnt nothing on the street touch it. Very street legal smoke'n hondas, 300GT's, 300/350zx's, stangs, (some with a bottles) & vetts. I only saw one guy give him a run for his money w/ an money invested ol' camero that had silly work done to it. They lined up, took off & the bug like always shot out of the hole while the Camreo tried to grabbed for traction. It still ended up being very close at the end only because my boy missed a gear which is very BIG in any race not to mention against a piggy bank set up like this guy had but even w/ the gear missing sh*t my boy still finished at the front of the pass. side door of the guys car. Needless to say he didnt want to run again he had to go lol To many people out there to witness a lil' bug spank his so called "beast" I guess.
But yea man I would get a better cam (depending on what u have if thats a problem) & maybe get some work done to those heads or some wilder ones good luck.

Sat Jul 26, 2008 1:30 pm

Are you sure your carbs are opeing all the way?

Sat Jul 26, 2008 5:00 pm

Is this "mainly" a street car?
Can you post your dyno graph?
3500 is pretty late for power to start coming on for a street car, you'll have to wring that sucker out!
More importantly, if it is a street car, when does your tq start coming on strong?

Sat Jul 26, 2008 5:20 pm

I will post my dyno graph tomorrow.I will get it from the office. To me the torque is not anything to write home about. I feel it once I get to 2nd gear and hit about 4000 rpm but it will not suck you back like I expected. I will check my carbs for opening all the way but I didn't have the cleaners off when I did it. I will look down the stacks to be sure. Also I remember the dyno chart has the jet sizes on it also.

Sat Jul 26, 2008 9:43 pm

Ok here is my attempt to upload the chart..

also it says fuel:91 octane..main jets:150 and air jets:190..timing 30 temperature is 87degrees and e-tubes are f-11

Hope this means something to someone. I just don't know what to do... Cam specs I will find out monday. I don't know whether to have someone swap cams or get a bigger crank.. Any ideas would appreciated. I have sunk alot of money for a poor white boy. I don't want a race car but I do want something that will set you back in the seat and run stop light to stop light but then be street able when you drive normal.

Sat Jul 26, 2008 11:03 pm

Those are not bad #'s but im not a engine builder. a 2110 should be around 150hp depending on heads and cam.

What cam is in it and C/R?

If Im just driving on the street I shift about 4500 to 5000. when racing 6500
right now Im lunching my car at 4000. with 60 foots at 2.17

Sun Jul 27, 2008 12:01 am

Well.... the graph does not record anything below 2750 rpm so there is no indication of when this cam comes on... The motor doesn't just go from 0/0 at 2750 to 69/121 at 3 grand. Aso the graph has two blank lines
at 6500 and seven grand before it registers 0/0 again. Something is missing there.

Sun Jul 27, 2008 9:19 am

With those skinny 165's out back are you having traction probs?

:?

Sun Jul 27, 2008 10:38 am

If I dump the clutch at 4000 it lights the tires up for sure. I want to punch it in second and feel it take off not have to wind it up to 4500 or more to get her to go some. I emailed for the cam specs so I should get them tomorrow and maybe we can get her figured out. I appreciate all the comments and help so far though !!

Sun Jul 27, 2008 11:07 am

There is a lot of power to be gained with proper tuning (A/F, timing, carb jetting and synch, fuel pressure, traction bars so no wheel hop, right tire pressure).

Like I said the first thing I would do is have someone sit in the drivers seat and just push the accl pedal to the floor and for you to view the carbs and make sure they open all the way and that the accl cable is not hanging up.

Did you check fuel pressure? Did they set the floats on those carbs for you? I would talk to the guys at Brothers as well.

That torque curve looks great-nice and flat-should be a good driving engine.

Sun Jul 27, 2008 6:56 pm

I agree with 74 Thing...your torque is good and strong in the lower rpm's, something seems off... I'd say a clutch problem, but not if you can light the tires. hhmmmm

Sun Jul 27, 2008 7:03 pm

Could sometime in the vehicles life the transmission been rebuilt with a different gearing or ring gear ratio?? I am wondering that. I am going to run a fuel pressure check in the morning also when I get to the shop.

Sun Jul 27, 2008 7:07 pm

Looks like too much cam to me.

Mon Jul 28, 2008 10:58 am

ok here is the cam info:
290° Advertised Duration
258° Duration at 0.050" Lift
0.545" Total Lift with 1.4 Ratio Rocker Arms

Compression is 9:1 and I run 91 octane fuel
I checked to make sure carbs are opening all the way and they are.
Thanks!!