Walbro 255 HP "Whine" Question.

[project_tsi]

Hey all, anyone else have a 255 HP? If so, is it loud or quiet?

I ask b/c I have a 190 in my 92 AWD, and its the usual Walbro whine. Loud, no rewire.

However, I had a 255 HP in my 91 FWD w/out a sock and with and without a rewire I couldn't hear it.

I now have the exact same 255 HP in my 93 GSX w/ a sock and a rewire and don't hear it at all.

The car's both ran fine, no fuel supply problems, I'm just wondering.....
Are the 255HP's quieter than the 255 or 190?

 

[andymoraitis]

My 190 made more noise than my 255 HP and neither was re-wired. I can't hear the thing at all. I've never tried the standard 255 so I can't say if there's a difference, but mine's church mouse quiet and I never hear it fluctuate with turn signals.

I wouldn't worry, but I too find it strange.

 

[project_tsi]

Andy are you sure you have a HP?

 

[Xplicit93AWD]

Ok sorry to maybe hack your thread butt I have 255 walbro and its loud as shit and also its not rewired but it does fluctuate when I flick for the turn signals. What dies that mean? Also how can I fix that?

 

[hairybeanbag]

Andy are you sure you have a HP?

I have a 255HP with no back seat or carpet, it's not loud but you still know it's thier.

Stock wiring and fuel feed line

 

[andymoraitis]

Andy are you sure you have a HP?

I just checked my receipts and yes, it's an HP.

 

[1990EclipseGSX]

I recently switched from a 255 to a 255HP, both rewired. The HP is much quieter than the regular 255 was, but the 255 was on its way out so that might have affected how loud it was.

 

[project_tsi]

Ok sorry to maybe hack your thread butt I have 255 walbro and its loud as shit and also its not rewired but it does fluctuate when I flick for the turn signals. What dies that mean? Also how can I fix that?

If you would have searched you would have found your answer. Don't hijack my thread.

 

[blackGSX2g]

I've also got the 255HP and noticed that it was alot quieter than my 190. My 190 was quiet for a few weeks when it was new, then got louder. The 255 has been in my car for at least 2-3 months and it hasn't had the loud whine yet. I can only really hear it when the car is turbo timing and all accessories are off. I am also full interior, but I gutted the car for a track night on Friday and it was still really quiet for a Walbro.

 

[chicagoavenger]

Just to add My HP 255 isn't as loud as everyone elses 255 that I have heard

 

[fulanititoo8198]

I can barely hear my 255hp at idle. I hear it only because I know it's there. Mines rewired by the way.

 

[nightspeed87]

i have a 190 hp and I dont hear it at all ( even with no back seats in the rear ) I have to literally put my head against the back seat flooring where the seats used to be just to hear it a little...

 

[FORMONTOYA]

I'll get in on this...I have the regular 255, not the HP, and it's rewired. It's pretty quiet when the car is first fired up and during the winter/cooler months. However, after it has run for a while in the summer months it has the tale-tale whine. You can actually hear it outside the car. I've learned to ignore it unless my wife's in the car asking "what's that noise? I think some thing's wrong."

Oh well, she doesn't ride in the car too much.

 

[docb002000]

Sorry I know this is old, but my 190 with the re wire get is ok when it is first cranked but by warm up its loud as ##### with full interior sounds like the police are behind me. Its only a week old with 2hour of run time is this normal?

 

[Boosted98gsx]

If you think a 255 is loud, don't ever get a bosch 044. Makes the 255 sound like a whisper.

 

[2GEEZEY]

mine is very loud, and my volt gauge flucuates when its whining? weird.

 

[docb002000]

Man I dont think its loud enough in traffic people roll dn their windows and ask is my car ok????

 

[black_gst]

i finally rewired mine yesterday and its 2x louder now

 

[turboglenn]

Yea, some whine worse than others, with the newer HP versions being the most quiet i've seen. I had one old Mustang styl;e 255 in my car for years and it sounded like a gear drive for a v8 cam
now i have 2 wally 255HP in tank in parrallel and thye are barely noticeable

 

[docb002000]

Yep the timing gear comparrison hit it on the head, I had some of those on a 383 stroker

 

[dsmfa9nutter]

You guys need to remember to ISOLATE the fuel pump from the frame it sits in with as much rubber as possible. I run a 255HP in the colt, I have no interior or sound deadening and with the car running, you can barely hear the pump. I reused the stock (csm) lower rubber isolator and doubled over the rubber ring that went around the stocker and added some split rubber line to keep it from touching anything solid.