Engine/Transmission (1994 - 1998) Temps with non-wastegated housings and plates

[J DeMaio]

Hi guys:



With my 12 cm housing with no wastegate and very little fueling enhancements, I'm getting pretty close to you guys with wastegate foolers and small 230 horse plates. I was wondering what kind of boost boost adn EGT numbers you all were seeing. I can hit 950* and 24# of boost empty. I have a 3" straight pipe only and a K&N filter in the stock air box. If I address these problems I should be able to flow a little more air and keep her considerably cooler.



Thanks,

John

 

[HoleshotHolset]

Make sure you specify where you are taking your EGT readings... it makes a big difference. Pre/post turbo is at least 300°F different... . and pre-turbo is much more responsive to changes in temp.



Matt

 

[J DeMaio]

Mine is pre turbo. What are the mods to your truck holeshot holset? What plate are you running?



Thanks,



John

 

[rjones]

I just hit 1550*pre turbo, not pulling anything, going up a small grade hill full throttle..... never did that before... ...

 

[HoleshotHolset]

Right now the truck doesn't have a plate in it... nor does it have a rack stop in the AFC housing. Can you say rack travel?



Currently I'm running the stock 160hp injectors and 181 delivery valves.



The pump also has a tightly adjusted Piers' 3k RPM governor spring kit.



I wouldn't worry about 950°F pre-turbo... . that's rather cool... . and not even beginning to work the engine much.



You can hold 1250°F for hours on end... . anything higher than that you can only hold for less than a minute or so.



The daring folks cheat piston crown and headgasket death by defying these 'rules' all the time. To each his own.



Matt

 

[J DeMaio]

Holeshot Holset,



Can you say giddie up I'll bet that your truck runs pretty good. What do you have on it for a turbocharger? You could really get fuel if you put a set of 370's in her. Thanks for the post, so I can run the engine continuous at 1250*?



John

 

[Garry Verheyden]

John,

I can hit 1700 degrees pre turbo on flat ground(if I keep it floored in 4th or 5th to 4000 rpm) After about 3500 rpm the temps. go up rapidly. This is at 37 psi of boost. I have towed for over 5 min. intervals at 1400 degrees for a few years now with no engine damage so far.

Garry.

 

[HoleshotHolset]

John: I have a WH1C - the predecessor to the HX35-W.

I hit 39psi all the time... .



As for the 370's... . I'm going to put in a set of injectors that require twins or triples after my new transmission goes in.



In the meantime she spools REAL quick and gets out of its own way just fine for my currently mild setup.



Matt

 

[Cooker]

Matt,

I see in your sig you have a bettle too huh? How do you like it? Also, if I remember correctly didn't you have a set of twins at one time Maybe I am thinking someone else.

 

[HoleshotHolset]

The Beetle TDI is sweet... . avg. 45mpg and a best of 52mpg.



As for the twins... . that is a subject better talked about in person or on the phone... . those who know the story can just sit back and chuckle. :-laf



Matt