1641 Turbo EFI Manx. 250Hp/337Nm Turbotub

[Chip Birks]

Many better cams than the tcs series. Look around first.

[Ol'fogasaurus]

.... Will paint affect the cooling??? .... Any advice here?

It may or can. Type of paint plus material you are adding it to, how much coating you apply plus several other things can affect the transfer of heat in some/certain situations.

If it is a new heat transfer tool then, if you can, question the manufacture to see if or what not can make a difference.

[petew]

Picked up an intercooler today, like the one posted above.
Its a used one and it has some wrinkles in the cooling fins on the outside but i will try to make it look decent. I'll straighten the worst ones and then give the outside a layer of paint to make it purdy again.

Will paint affect the cooling???

Next up is the search for cooling fans for the IC.

Had a great chat with my engine builder too last week.

We tought of a engle tcs20 cam. Low compression 8.0 -8.5 to 1

Any advice here?

Don't go lower than stock comp ratio. The only reason people did that in the past was poor tuning and concerns about detonation. You can tune it right and low comp makes it laggy off boost. As for that cam... I'd say not. Basically it's an Engle 120 without the overlap. I'd go the 120 instead.

[Chip Birks]

I'd go with a 1.4 rocker based cam. Less movement in the rocker bore. Fk8 is a very popular cam, though maybe a little big for your mild mouse build. Same with WEB 86b, but again, cc can play a big role in how any engine responds to a cam setup.

[Clonebug]

I myself wouldn't paint the intercooler..........You are just adding a layer of insulation in my opinion.

But I could be wrong and not understand paint.

[panel]

I painted mine......

Some info here I found: https://forums.nasioc.com/forums/showth ... ?t=2639832 and here
https://forums.nasioc.com/forums/showth ... ?t=2639832

[BBvideo=560,315]https://www.youtube.com/watch?v=f1QL9veQaNg[/BBvideo]

[rubenski]

Hi, thanks for your reply's,

my engine builder suggested that cam and compression to be more safe when on boost.

The Subaru turbo will probably spool pretty fast and generate boost fast.

i'm not that educated on cams, i will read up on that.

What would be a good cam in your opinions?

He said you want a cam that has the valves both closed for the longest time so the pressure stays in the combustion chamber.

Greetz!

[rubenski]

Oh, and i have 1.25 ratio rockers

[panel]

i'm not that educated on cams, i will read up on that.

Here ya go: http://www.shoptalkforums.com/viewtopic.php?t=106178

[rubenski]

350+ posts.

Oh joy

[petew]

Let me give you a quick summary.

Comp ratio. I had 8:1. Then changed back to stock 8.5:1. I could feel the difference straight away. Engine comes on boost faster, etc. For a 3bar race motor running 8k revs, maybe lower is better. For those of us driving turbo street motors, stock comp ratio is more than low enough to begin with.

Cam. Everyone has noted that comparatively aggressive NA cams (like an FK87) seem to cope fine with boost. The bigger the cam the more they move power further up the rev range. Remember we're using EFI too, so that allows us to tune lulls and flatspots out too. A 110 or 120 will be fine and probably help it come on boost a little earlier on the street.

[madmike]

up to 1915cc use a w110 or the w120 with your 1:25's
on a 1915cc or larger I'd use a FK-8 with 1:4's
and x2 with pete on the CR of 8.5

[rubenski]

Well, CC's will stay the same.

I texted my builder that i read that not everyone is happy about a tsc cam.
He replied that we would better look for a single lobe cam instead of a dual.

Now i have to look up what that means... omg...

[Ol'fogasaurus]

Is he talking about a 1/4 speed cam?

http://www.eng-tips.com/viewthread.cfm?qid=107306
http://speedtalk.com/forum/viewtopic.php?p=94112 (Schaller Cam for example; Read the part about valve springs)

If so I didn't know they were still being ground and especially didn't know that they were available for a VW.

Lee

[buguy]

When I looked it up a while back in pretty sure I found that my 1600 was 7.3:1 comp stock?