Thread: Lack of power even after mods

Or I could have given it more thought then I did, my apologies all.

What an odd outcome on a forum, people sorting out their differences and making up !

So, how does omy130 turn up the BOOST!?

Originally Posted by BigBlackDog

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So, how does omy130 turn up the BOOST!?

Adjust the wastegate actuator on the turbo to increase tension so the wastegate opens later (higher pressure).

18 psi is fine for the stock turbo.

One other aspect to check is the actual timing of the injection pump. It is not too difficult to measure the plunger lift at TDC. This and the tappets would be my first adjustments before even touching the aneroid or boost.

Talking increasing boost, you can play with the wastegate as Ben mentions or other option is a needle valve like this:

Manual Adjustable Boost Controller Boost TEE | eBay

placed in the wastegate line. Especially on a 300 where the wastegate is a touch challenging to get to. One of these jiggers will let you fiddle the boost to wherever you would like

I tend to agree on the ~18psi target under load. On overrun low load you might peak to 20 odd.

Steve

Spoke to MR Auto. Part of their re-tune checks timing & value clearance. So it's not that.

New timing belt fitted before I bought it. Is it possible to get the internal timing marks wrong when putting the belt on but the external indicators still being right?

Going to play over the weekend.

Originally Posted by BigBlackDog

What an odd outcome on a forum, people sorting out their differences and making up !

So, how does omy130 turn up the BOOST!?

That's because we are trying to help somebody and not comparing county to puma, or discussing alternate energy/ cyclists/ raw milk/ vaccinations and whatever other slag matches are currently running

Also going back a few steps, why the disco high range? as Tombie mentioned, kills performance on 32' or bigger tyres. - most Disco owners are looking at changing diff ratio's when going 32 or above

Id expect to see higher EGT's on the flat if timing was out, plus I have a little more faith in MR auto's workmanship - how long ago was the tuneup? and was it done before or after the other mods?

Is it possible to get the internal timing marks wrong when putting the belt on but the external indicators still being right?

The only external indicators are flywheel slot at TDC and Injection Pump at maximum lift.
There is no external way to assess the cam position with the timing case in place.
It is definitely possible to install the belt with the cam gear out by a tooth

BUT from all accounts on the forum I would have thought MR would be onto that palaver like white on rice...

out of interest were all your modifications performed at same time.
ie did you do the tuning whilst throwing your gearing out the window???
Putting a disco Tbag into the defender is kinda like throwing 15% of your torque down the drain... if you have not driven the rig with the new gearing before tuning it may all just be due to gearing.

S

Do many people run these boost tee roverrescue? Looks like a really good thing, I'd never heard of them until 5 minutes ago. Did some research, I like! Not till I get a boost gauge on though
Sorry, any other dumb question - what is the best place to tap the boost reading from? I'm torn between the intake manifold (that cap bolt at the back) to measure what the engine is getting, or the boost line itself to measure what the turbo is actually doing. Or does it completely not matter?