STD Tuning Engine drilling air fittings..?? 300sd

drilling air fittings..?? 300sd

drilling air fittings..?? 300sd

 
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cho
GT2559V

183
09-21-2012, 07:22 AM #1
hi guys

I have read from some old std posts that some guys
do the drilling of air fittings...to equalize a bit of garret boost?

I assume that you (I) have to drill banjo bolt back on manifold and one on alda a 1mm or so, wider and put a bit wider hose..say 4 or 5mm?

correct?

why I wanna do it....I have a loooong turbo lag and sudden heavy boost


thanks


cheers
ChO


.

500SEC euro gen II powered by OM617a stolen from 84 300SD .... with 280se transmission now Smile
----------------------------------------------------------
.
cho
09-21-2012, 07:22 AM #1

hi guys

I have read from some old std posts that some guys
do the drilling of air fittings...to equalize a bit of garret boost?

I assume that you (I) have to drill banjo bolt back on manifold and one on alda a 1mm or so, wider and put a bit wider hose..say 4 or 5mm?

correct?

why I wanna do it....I have a loooong turbo lag and sudden heavy boost


thanks


cheers
ChO


.


500SEC euro gen II powered by OM617a stolen from 84 300SD .... with 280se transmission now Smile
----------------------------------------------------------
.

aaa
GT2256V

913
09-21-2012, 08:08 AM #2
I don't think it would alleviate the lag. It would alleviate the suddenness though.

Have you looked into the higher stall torque converter? Might help with lag.
aaa
09-21-2012, 08:08 AM #2

I don't think it would alleviate the lag. It would alleviate the suddenness though.

Have you looked into the higher stall torque converter? Might help with lag.

cho
GT2559V

183
09-21-2012, 08:22 AM #3
(09-21-2012, 08:08 AM)aaa Have you looked into the higher stall torque converter? Might help with lag.

thanks, please do elaborate me your last sentence

not a english native, so I have problems with eng.tech terms... Sad


edit: you suggest installing new torque conv. if I understand you correctly..?


.
This post was last modified: 09-21-2012, 08:31 AM by cho.

500SEC euro gen II powered by OM617a stolen from 84 300SD .... with 280se transmission now Smile
----------------------------------------------------------
.
cho
09-21-2012, 08:22 AM #3

(09-21-2012, 08:08 AM)aaa Have you looked into the higher stall torque converter? Might help with lag.

thanks, please do elaborate me your last sentence

not a english native, so I have problems with eng.tech terms... Sad


edit: you suggest installing new torque conv. if I understand you correctly..?


.


500SEC euro gen II powered by OM617a stolen from 84 300SD .... with 280se transmission now Smile
----------------------------------------------------------
.

aaa
GT2256V

913
09-21-2012, 08:52 AM #4
The 1985 torque converter had a higher stall speed, allowing the engine to reach higher rpm faster, which will lessen the lag.
aaa
09-21-2012, 08:52 AM #4

The 1985 torque converter had a higher stall speed, allowing the engine to reach higher rpm faster, which will lessen the lag.

cho
GT2559V

183
09-21-2012, 09:09 AM #5
.

ok,got it Smile thanks mate

.

500SEC euro gen II powered by OM617a stolen from 84 300SD .... with 280se transmission now Smile
----------------------------------------------------------
.
cho
09-21-2012, 09:09 AM #5

.

ok,got it Smile thanks mate

.


500SEC euro gen II powered by OM617a stolen from 84 300SD .... with 280se transmission now Smile
----------------------------------------------------------
.

Simpler=Better
PORTED HEAD

2,127
09-21-2012, 09:30 AM #6
Check your ALDA lines as well-they may be dirty and partially clogged,

or

Adjust / remove the ALDA so that the fueling curve is a bit smoother

Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?
Simpler=Better
09-21-2012, 09:30 AM #6

Check your ALDA lines as well-they may be dirty and partially clogged,

or

Adjust / remove the ALDA so that the fueling curve is a bit smoother


Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?

cho
GT2559V

183
09-21-2012, 11:39 AM #7
already did Smile, banjo's & lines are fine and clean...

I'm thinking of ALDA removal but some guys reported significant
fuel consumption issues... well,... no win win here I guess ...


tx


.

500SEC euro gen II powered by OM617a stolen from 84 300SD .... with 280se transmission now Smile
----------------------------------------------------------
.
cho
09-21-2012, 11:39 AM #7

already did Smile, banjo's & lines are fine and clean...

I'm thinking of ALDA removal but some guys reported significant
fuel consumption issues... well,... no win win here I guess ...


tx


.


500SEC euro gen II powered by OM617a stolen from 84 300SD .... with 280se transmission now Smile
----------------------------------------------------------
.

Simpler=Better
PORTED HEAD

2,127
09-21-2012, 11:53 AM #8
Significant fuel usage if you always mash the pedal Big Grin

A small, GENTLE adjustment may help you

Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?
Simpler=Better
09-21-2012, 11:53 AM #8

Significant fuel usage if you always mash the pedal Big Grin

A small, GENTLE adjustment may help you


Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?

willbhere4u
Six in a row make her go!

2,507
09-21-2012, 12:17 PM #9
Try adjusting the ALDA It only affects off boost fueling
This post was last modified: 09-21-2012, 12:18 PM by willbhere4u.

1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running
willbhere4u
09-21-2012, 12:17 PM #9

Try adjusting the ALDA It only affects off boost fueling


1987 300SDL 6spd manual om606.962 swap project
1985 300td euro 5spd wagon running

cho
GT2559V

183
09-24-2012, 02:30 AM #10
thanks guys,..

ALDA has been already adjusted also..."until smoke appears"
a year back.... basically I don't have a weak power problem,......

sudden (power) boost is issue I would like to resolve Smile

some KKK turbo might help Smile


.

500SEC euro gen II powered by OM617a stolen from 84 300SD .... with 280se transmission now Smile
----------------------------------------------------------
.
cho
09-24-2012, 02:30 AM #10

thanks guys,..

ALDA has been already adjusted also..."until smoke appears"
a year back.... basically I don't have a weak power problem,......

sudden (power) boost is issue I would like to resolve Smile

some KKK turbo might help Smile


.


500SEC euro gen II powered by OM617a stolen from 84 300SD .... with 280se transmission now Smile
----------------------------------------------------------
.

cho
GT2559V

183
10-11-2012, 08:17 AM #11
I just found this one considering lag:

A downpipe with a smaller inner diameter offers less airflow, slightly reducing top-end horsepower. However, the smaller pipe diameter increases the speed of exhaust flow, thus allowing your turbocharger to spool faster, increasing response and low-end power.


is this true?
how to do calculation how much HP I will lose with 2 inch pipe instead
2.5 inch which I have now?


beers
ChO


.

500SEC euro gen II powered by OM617a stolen from 84 300SD .... with 280se transmission now Smile
----------------------------------------------------------
.
cho
10-11-2012, 08:17 AM #11

I just found this one considering lag:

A downpipe with a smaller inner diameter offers less airflow, slightly reducing top-end horsepower. However, the smaller pipe diameter increases the speed of exhaust flow, thus allowing your turbocharger to spool faster, increasing response and low-end power.


is this true?
how to do calculation how much HP I will lose with 2 inch pipe instead
2.5 inch which I have now?


beers
ChO


.


500SEC euro gen II powered by OM617a stolen from 84 300SD .... with 280se transmission now Smile
----------------------------------------------------------
.

Simpler=Better
PORTED HEAD

2,127
10-11-2012, 10:09 AM #12
I would keep the 2.5" downpipe. Do you have a boost gauge installed?

Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?
Simpler=Better
10-11-2012, 10:09 AM #12

I would keep the 2.5" downpipe. Do you have a boost gauge installed?


Newbie-read this: Cheap Tricks
617.952-220k-Getting built up
larsalan I guess I need to look at this stupid ass drip shit. What you have to like mess with those elements on the pump? What a fucking hassle. then use some wire to hold the throttle open or some shit?

cho
GT2559V

183
10-11-2012, 12:53 PM #13
(10-11-2012, 10:09 AM)Simpler=Better I would keep the 2.5" downpipe. Do you have a boost gauge installed?


have one 5 bar 1st class rated, not installed yet....will tee soon

if above theory is correct I might consider 2 inch with muffler only
I dont use top speed anyway... so 5 or even 10 mph lost is ok..


edit: kind a funny post on superturbo diesel forum Smile))
.
This post was last modified: 10-11-2012, 12:54 PM by cho.

500SEC euro gen II powered by OM617a stolen from 84 300SD .... with 280se transmission now Smile
----------------------------------------------------------
.
cho
10-11-2012, 12:53 PM #13

(10-11-2012, 10:09 AM)Simpler=Better I would keep the 2.5" downpipe. Do you have a boost gauge installed?


have one 5 bar 1st class rated, not installed yet....will tee soon

if above theory is correct I might consider 2 inch with muffler only
I dont use top speed anyway... so 5 or even 10 mph lost is ok..


edit: kind a funny post on superturbo diesel forum Smile))
.


500SEC euro gen II powered by OM617a stolen from 84 300SD .... with 280se transmission now Smile
----------------------------------------------------------
.

winmutt
bitbanger

3,468
10-11-2012, 09:24 PM #14
Turn your ALDA out a bit.

1987 300D Sturmmachine
1991 300D Nearly Perfect
1985 300D Weekend/Camping/Dog car
1974 L508D Motoroam Monarch "NightMare"
OBK #42
winmutt
10-11-2012, 09:24 PM #14

Turn your ALDA out a bit.


1987 300D Sturmmachine
1991 300D Nearly Perfect
1985 300D Weekend/Camping/Dog car
1974 L508D Motoroam Monarch "NightMare"
OBK #42

 
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