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Turbo lag #2630697
03/09/19 11:19 AM
03/09/19 11:19 AM
Joined: Nov 2009
Posts: 3,020
St. Paul , Mn.
tubtar Offline OP
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tubtar  Offline OP
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St. Paul , Mn.
Beyond saying that knowing what I know now , that turbocharging makes a lot of sense , I know very little about it.
But I have a good handle on humorous , and I think this is it.
Hope you found it as funny as I did.

turbo lag.jpg
Re: Turbo lag [Re: tubtar] #2630698
03/09/19 11:22 AM
03/09/19 11:22 AM
Joined: Aug 2008
Posts: 3,536
Mo.
racerx Offline
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racerx  Offline
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laugh2.....I no little as well but ,that's an good understanding on how it works.

Re: Turbo lag [Re: tubtar] #2630754
03/09/19 01:45 PM
03/09/19 01:45 PM
Joined: Aug 2003
Posts: 37,739
Bend,OR USA
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Cab_Burge Offline
I Win
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Bend,OR USA
Originally Posted by tubtar
Beyond saying that knowing what I know now , that turbocharging makes a lot of sense , I know very little about it.
But I have a good handle on humorous , and I think this is it.
Hope you found it as funny as I did.

I likey


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Turbo lag [Re: tubtar] #2630810
03/09/19 03:48 PM
03/09/19 03:48 PM
Joined: Jan 2003
Posts: 7,229
Tulsa OK
Bad340fish Offline
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Bad340fish  Offline
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Tulsa OK
haha that is a great meme.

I have the boost itch pretty bad. I have an R1 block, enough fuel system for 1200HP, and multi point EFI with pretty much limitless capabilities already. From just a little bit of figuring and looking around it would cost me $6000-7000 to do a pro-charger setup that would support 800-1000HP and that is without touching the motor. I think I could do a turbo deal for less than that including putting in a stronger piston and a cam suited for boost. So now all i need is a little money and time...easy right? lol


68 Barracuda Formula S 340
87 "Chrysler" Conquest
Re: Turbo lag [Re: Bad340fish] #2630822
03/09/19 04:35 PM
03/09/19 04:35 PM
Joined: Nov 2009
Posts: 3,020
St. Paul , Mn.
tubtar Offline OP
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tubtar  Offline OP
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Posts: 3,020
St. Paul , Mn.
Originally Posted by Bad340fish
haha that is a great meme.

I have the boost itch pretty bad. I have an R1 block, enough fuel system for 1200HP, and multi point EFI with pretty much limitless capabilities already. From just a little bit of figuring and looking around it would cost me $6000-7000 to do a pro-charger setup that would support 800-1000HP and that is without touching the motor. I think I could do a turbo deal for less than that including putting in a stronger piston and a cam suited for boost. So now all i need is a little money and time...easy right? lol


biggrin Exactly right ! biggrin

Re: Turbo lag [Re: tubtar] #2630970
03/10/19 02:15 AM
03/10/19 02:15 AM
Joined: Mar 2003
Posts: 1,348
Martinsville, IN
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cdwmotorsports Offline
pro stock
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Posts: 1,348
Martinsville, IN
Having dabbled in the diesel turbo world I will tell you what I know (what I’ve been told) to the truthfulness and accuracy I can not attest.

Turbo lag is caused by an exhaust housing that is too large for the amount of exhaust gasses exiting engine, thus causing a longer time to spin the boost wheel causing the lag between the foot to the floor and the turbo catching up.


Exhaust housings that are too small are also an issue. We used to take the 20mm exhaust side housing off our hx35’s and put on 16mm ones. There were also 12’s but we found this caused exhaust temps higher than desirable without water injection to keep the pistons in it.


I’m sure there is a YouTube video somewhere that explains it in better detail.

https://youtu.be/5bGLcoSU73I

Last edited by cdwmotorsports; 03/10/19 02:17 AM.

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Re: Turbo lag [Re: cdwmotorsports] #2630991
03/10/19 07:36 AM
03/10/19 07:36 AM
Joined: Jan 2007
Posts: 7,664
IN
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ahy Offline
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ahy  Offline
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Posts: 7,664
IN

[size:14pt][/size]Turbo lag prevention illustrated. At low throttle, seriously retard timing and put some air and lots of fuel in. Keeps the turbo spun up and ready to go. Just make sure nobody is standing behind!

backfire.jpg
Re: Turbo lag [Re: ahy] #2630996
03/10/19 08:58 AM
03/10/19 08:58 AM
Joined: Jan 2003
Posts: 2,321
PA
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70HemiGTX Offline
top fuel
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PA
Drive an older (I do not have experience with newer ones) Dodge Ram with a Cummins and a manual trans. and you will experience turbo lag. Just cruise along in a higher gear at say 35 - 40 mph (1000 - 1200 rpm) and stab the throttle. After a second or two you will feel the kick in the but. That is turbo lag. Your boost pressure got high enough to force more air and fuel into the cylinders.

Re: Turbo lag [Re: 70HemiGTX] #2631117
03/10/19 02:48 PM
03/10/19 02:48 PM
Joined: Mar 2003
Posts: 1,348
Martinsville, IN
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cdwmotorsports Offline
pro stock
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Martinsville, IN
The newer ones don’t have this issue, they have diminutive exhaust housings some as small as 9mm to lessen the problem, however it adds a totally different issue in high EGT temps when you start hotrodding them.


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