What cam is this? Suggestions for replacement?

[Golf Houso]

There was a mk1 caddy in PVW recently running on quad snowmobile carbs which was interesting.

Quick question can you run American spec ABA cams and cam gears, lifters etc in 2E golf motors? Like the ones you get from TM tuning and MJM autohaus?

I'm looking for a few things to put into my golf.

[abreut]

a question - are the cross-flow 8v's in some mkIV's over here, I think they were used in beetles, ABA's?

A mate of mine is a mechanic at a euro workshop and he has now scored two cross-flow 8v heads. I forgot to ask him what they are off. We are thinking about building up our old rally golf with a set of twin dellortos. I think the cam is the same as a counter-flow hydraulic 8v's btw, I 'll see if I can get some numbers off it this w/e.

[Golf Houso]

Cool, thanks for that. I'd be kicking myself if I bought $500 worth of mean parts and being told by my mechanic after the valves were bent that they weren't the right ones

I do believe they are the same,but I'd still like to hear it from someone telling me that its the case, I just emailed mjm and I'm waiting for a response. Get ready 2.slow drivers!

Crossflow head? gimme!

[abreut]

No worries but let me check first because I could be wrong!

[Peter Jones]

After lots of indecision I bit the bullet and ordered one of these and some HD springs to go with it.


268° (Advertised)
109 071 (Part Number)
$130.00 (US$)
245°/244.5° (Duration @.020" In/Ex)
232.5°/231° (Duration @1mm In/Ex)
226°/225° (Duration @.050" In/Ex)
.440" (Lift)
110° (Lobe centre)
2.8° BTDC (In open @ .050")


All Hyd. Except OBD II Fair Idle** (Comment)


http://techtonicstuning.com/showpart...artnum=109.071

I was torn between just popping a G Grind in there or ordering a new Cam, in the end I just figured I'd go for broke. I reckon this is about as far as I could go on the GX motor running K-Jet.

Maybe I should have gone slightly lower spec but what the Hell, I can always use it in my project 2.0L cross flow later on.

Pete

[Oneofthegreats]

Not a bad choice Pete. I've got some tool's here to fit the Valve Spring's with the head on if you need to borrow them.

You can still go a fair bit bigger even with K-Jet.
The Autotech 270 is a tiny bit bigger & I never had any trouble's with it on K-Jet & can recommend this to anyone. Very smooth idle.

I just ordered a 276 cam.
It's the second largest hyd. I could find & should be pretty lumpy. 10whp increase they reckon & power come's on strong from 4000rpm.

Hopefully have it next week & have it installed next weekend. Will give an update how it is.

On the flip side, you should try & upgrade your K-Jet to a Volvo 240 2.2L setup with a Audi throttle body.
The improvement is fairly substantial & is easily noticable.

One other thing you mentioned in your PI post is about revving your engine into to the fuel gauge.
I can safely say this, as I had a stock GX at one time & the problem is, it's not making anymore power after 5500rpm, so your just flogging a dead horse revving it that hard.
The 268 will make nice power, but still revving it this hard is a waist.

I revved my 270 to 6700rpm cleanly & it was just starting to nose over at the end of Symmond's Plain's at a indicated 195km/h with a stock Diesel 4 speed.
I'd only rev it to 6200rpm between gear shift's & let the improve bottom end response & torque pull through the gear's.
I also had the cam timing retarded by 2 degree's for alittle more in the top end.

[Peter Jones]

Not a bad choice Pete.

You can still go a fair bit bigger even with K-Jet.
The Autotech 270 is a tiny bit bigger & I never had any trouble's with it on K-Jet & can recommend this to anyone.

I just ordered a 276 cam.
It's the second largest hyd. I could find & should be pretty lumpy. 10whp increase they reckon & power come's on strong from 4000rpm.

Hopefully have it next week & have it installed next weekend. Will give an update how it is.

On the flip side, you should try & upgrade your K-Jet to a Volvo 240 setup with a Adui throttle body.
The improvement is fairly substantial & is easily noticable.

One other thing you mentioned in your PI post is about revving your engine into to the fuel gauge.
I can safely say this, as I had a stock GX at one time & the problem is, it's not making anymore power after 5500rpm, so your just flogging a dead horse revving it that hard.
The 268 will make nice power, but still revving it this hard is a waist.
I revved my 270 to 6700rpm cleanly & it was just starting to nose over at the end of Symmond's Plain's at a indicated 195km/h with a stock Diesel 4 speed.
I'd only rev it to 6200rpm between gear shift's & let the improve bottom end response & torque pull through the gear's.

Point taken about the rpm. My car has the very tall ratio 5 speed in it and with the GX motor there's just not enough power to bother changing up a gear before the next corner. 4th Gear is next to useless as the car barely accelerates in 4th - it just doesn't have the power. It also takes a long time to wind out in 3rd. So what happens is that I just hold 3rd a bit longer between corners rather than changing up to 4th. There's more acceleration to be had above 5500 in third than there is to be had by changing to 4th (No Joke!).

4th is sort of like overdrive in the car you only use it for constant speed, there's just no acceleration.

Even around town you can't get any power out of it at low RPM. Even just pulling out of a suburban side-street in second gear it struggles. It's always liked to rev though.

I think everything is working OK it's just the lowest powered of the 1800s with the tallest ratio box.

It's a work in progress, all your suggestions and comments are being taken on board, I've got a lot of learning to do yet.

With regard to the throttle body, the chap doing the headwork at the moment is seeing what he can come up with on that front. I've pretty much left all that up to him to work out. His last suggestion was a large bore single valve TB, again I'll trust him to do the right thing there. Likewise I left him mumbling away about bigger valves and porting etc. His eyes just sort of glazed over as he was rubbing the head in a very intimate way. Sometimes it's better not knowing. I'll post photos and details when I get it back.

I'll do the Volvo 240 fuel distributor thing too as soon as I can lay my hands on one. There's a good cleaned set of injectors on the way too to replace my mismatched set.

I was toying with the idea of the tt 276degree cam but I didn't want to go too nuts with this as I still want to build a motor from scratch next year. I pick up the base 2.0L motor tomorrow in fact.(And the bigger cam was also another US$70)

I have a diesel 4 speed in my other Golf which is going to be swapped out for a Cordoba 5 speed soon. I'll see how the head mod goes at improving torque/power and then make a decision about putting the 4 speed back into this car.

Pete

[Golf Houso]

Are these parts you have purchased Peter Jones, going to go into that 2e vento motor you just acquired? I always see the whole "fits all 8v hydro" caption on so many items and have a bit of trouble believing it, I guess its true now.

What HD springs did you get?

[Golf Loon]

What gearbox code is it?
We just took a 4T diesel box out of the rocco. had the tallest 2nd to 110kph! and 4th and 5th were so similar on the highway.
That was only being pushed by a 1.6 8v carby, so would be awesome with a bigger motor.

[Peter Jones]

Are these parts you have purchased Peter Jones, going to go into that 2e vento motor you just acquired? I always see the whole "fits all 8v hydro" caption on so many items and have a bit of trouble believing it, I guess its true now.

What HD springs did you get?

They'll go in the GE 1800 K-jet for the moment.

The 2.0 is a longer term project.

These are the springs, nothing too extreme.
http://techtonicstuning.com/showpart...rtnum=109.081S

Pete