.
Make payments with PayPal - it's fast, free and secure! registry | CVN on Facebook | tech | links | news | email login | chat Make payments with PayPal - it's fast, free and secure!


Welcome to CVN - Your Panther platform headquarters!


Custom Search


Page 1 of 2 1 2 >
Topic Options
#2246945 - 02/26/11 01:06 PM Difference between Dorman 615-175 and 615-178?
TopazSparrow Offline
Stranger

Registered: 02/14/11
Posts: 6
Loc: Canada
The ol gal (1996) finally cracked the OEM manifold so I replaced it with a dorman 615-175.

It's running very poor now and won't hold water pressure. Upon further review it seems that I should have purchased the 615-178 instead.

Is there any major differences between the Dorman 615-175 and the 615-178's? They look the same to me, but I can't really think of any other reason why the coolant would be leaking still.

I don't really want to spend another 200 dollars on the part only to have the problem be unrelated.

Top
Links
#2246953 - 02/26/11 01:21 PM Re: Difference between Dorman 615-175 and 615-178? [Re: TopazSparrow]
Stick Online   content
Climber

Registered: 11/29/07
Posts: 960
Loc: Oshawa Ontario Canada
the Dorman 615-175 is for a PI engine 2001 and newer and the Dorman 615-175 is a NPI 2000 and older engine.
_________________________
2010 CVPI Black ]Jmod/rear bumper tuck /Head light harness upgrade

Top
#2246960 - 02/26/11 01:30 PM Re: Difference between Dorman 615-175 and 615-178? [Re: TopazSparrow]
Blackcvpi Offline
Cynical Jackass
Poobah

Registered: 05/19/09
Posts: 5292
Loc: Your mom's house
615-175 is for 2001 and up. 165-178 is the correct manifold.

Where is it leaking coolant?
_________________________
2003 Crown Victoria ( AKA Car Craft Crown Vic ) ff, Trick Flow 38CC top end kit, Full SW exhaust, MM Airbox and MAF, ADTR zip tube, 78mm BBK Plenum and TB, Tuned by RET in Downey CA, Jmod, 3.73 with track lok, Naake coilover suspension, Henious control arms, Mettco watts link, Addco sway bars, 17" steel rims widened to 9.0 with 285/40/17 tire in the rear....more mods coming soon.

08 F250 Super Duty Lariat Crew Cab, 6.4 Powerstroke Turbo Diesel, Daystar leveling kit with Bilstien Shocks [/size]



Top
#2247008 - 02/26/11 02:15 PM Re: Difference between Dorman 615-175 and 615-178? [Re: TopazSparrow]
TopazSparrow Offline
Stranger

Registered: 02/14/11
Posts: 6
Loc: Canada
Not sure, once temp builds up it just starts hissing out. Also it feels like there is a vacuum leak when I give it some gas... If I had to guess, I'd say the manifold doesn't seal properly or. It's fine when cold or if I don't jab the gas.

So I'm wondering if the manifolds are slightly different regarding their mating surfaces.

Top
#2247207 - 02/26/11 06:52 PM Re: Difference between Dorman 615-175 and 615-178? [Re: TopazSparrow]
Bangster Offline

Poobah

Registered: 11/30/01
Posts: 6545
Loc: Tucson Az
There is a mismatch with both the water ports AND the air ports, makes total sense that you have both problems.

Unlike the Ford/Motorcraft PI intake, there is no way to fully/properly seal the differences in the air port shape between the intake and heads.
_________________________
00 Grand Marquis LS Premium - 97 Cougar 4.6 Sport - 89 Cougar LS - 63 Falcon 302 - 82 F-150 -
1974 Honda cb400

Top
#2249773 - 03/02/11 10:12 AM Re: Difference between Dorman 615-175 and 615-178? [Re: Bangster]
Blackcvpi Offline
Cynical Jackass
Poobah

Registered: 05/19/09
Posts: 5292
Loc: Your mom's house
Originally Posted By: Bangster
There is a mismatch with both the water ports AND the air ports, makes total sense that you have both problems.

Unlike the Ford/Motorcraft PI intake, there is no way to fully/properly seal the differences in the air port shape between the intake and heads.


That same intake he is using is working just fine for me after over a year and close to 12,000 miles.

To the OP........how did you tighten the manifold?

Did you start in the middle of the manifold and work you way out in a crisscross pattern?
_________________________
2003 Crown Victoria ( AKA Car Craft Crown Vic ) ff, Trick Flow 38CC top end kit, Full SW exhaust, MM Airbox and MAF, ADTR zip tube, 78mm BBK Plenum and TB, Tuned by RET in Downey CA, Jmod, 3.73 with track lok, Naake coilover suspension, Henious control arms, Mettco watts link, Addco sway bars, 17" steel rims widened to 9.0 with 285/40/17 tire in the rear....more mods coming soon.

08 F250 Super Duty Lariat Crew Cab, 6.4 Powerstroke Turbo Diesel, Daystar leveling kit with Bilstien Shocks [/size]



Top
#2249796 - 03/02/11 10:43 AM Re: Difference between Dorman 615-175 and 615-178? [Re: TopazSparrow]
98VicP71 Offline
14.6@93MPH
Grand Poobah

Registered: 03/28/06
Posts: 12731
Loc: ATL
if you are running the PI version manifold on a NPI car. then you have to put RTV in the corner of the water jackets to seal them properly and allow ample time for the RTV to dry before you fill the car back up with water and start it.

I have heard that usually you can't use the Dorman style intakes with the built in gaskets when doing a PI intake swap.

The other issues which I am wondering if you ran across is the coolant tube that runs under the manifold. when you do a PI intake swap you need to swap it out for a PI version. It could be the intake is sitting on this tube and not allowing the manifold to seal fully to the heads.
_________________________
1993 Lincoln Town Car 150k+ - RIP 5/10/2011
1998 Ford Crown Victoria P71 - RIP 12/25/2006
2001 Ford Crown Victoria P71(Count blackula) 180k+ - Ummmmmm evil

Top
#2252249 - 03/05/11 03:55 PM Re: Difference between Dorman 615-175 and 615-178? [Re: TopazSparrow]
TopazSparrow Offline
Stranger

Registered: 02/14/11
Posts: 6
Loc: Canada
98VicP71:
The last time I installed the 615-175 manifold I used RTV around all the gaskets to see if it would help. It didn't make any difference. Is this what you meant?

I've got the "proper" (615-178) version now and about to install it. From what I can tell, the port shapes are inconsequentially similar... I see zero reason for the 615-175 (PI) not to be sealing properly. I think 98vic, might be right about the crossover hose underneath it. The 175's do seem to sit deeper, maybe it was just hitting it. I can see it putting up enough resistance to hit 18 lbs/inch prematurely on the manifold bolts.


I'm going to be absolutely livid if the new manifold doesn't fix the issue.

If its not he manifold, I'm thinking it's a combination of an injector o-ring and some mystery coolant leak. If this turns out to be the case I feel like driving the car off a cliff.

Top
#2252250 - 03/05/11 03:56 PM Re: Difference between Dorman 615-175 and 615-178? [Re: Blackcvpi]
TopazSparrow Offline
Stranger

Registered: 02/14/11
Posts: 6
Loc: Canada
Originally Posted By: AKA_Blackcvpi
Originally Posted By: Bangster
There is a mismatch with both the water ports AND the air ports, makes total sense that you have both problems.

Unlike the Ford/Motorcraft PI intake, there is no way to fully/properly seal the differences in the air port shape between the intake and heads.


That same intake he is using is working just fine for me after over a year and close to 12,000 miles.

To the OP........how did you tighten the manifold?

Did you start in the middle of the manifold and work you way out in a crisscross pattern?


I followed the bolt pattern on the instructions.

Top
#2252261 - 03/05/11 04:05 PM Re: Difference between Dorman 615-175 and 615-178? [Re: TopazSparrow]
BlaineB Offline
Over the Hill

Registered: 09/21/06
Posts: 4184
Loc: *
If he was using a PI intake on a nPI car with the nPI water pump tube there would be no way that the intake would even fit at all with that tube running directly under it. It would be sitting improperly, several inches above the heads.

I was in the junkyard the other day and found a 4.6 nPI with an intake removed already and found an alread pulled PI intake sitting under another car, I "test fit" it on the nPI motor and it was hitting the water tube straight away....without even being close to the heads.


Edited by BlaineB (03/05/11 04:07 PM)

Top
#2252279 - 03/05/11 04:37 PM Re: Difference between Dorman 615-175 and 615-178? [Re: BlaineB]
TopazSparrow Offline
Stranger

Registered: 02/14/11
Posts: 6
Loc: Canada
Not sure what to tell you, the 615-175 seems to sit just fine. it definitely wasn't sitting inches off the heads. I just checked out the bottom and there was a bit of scuffing, so it was touching the hose, just not sure if it was the problem or not.

I'll post back the results of the 615-178


Edited by TopazSparrow (03/05/11 06:20 PM)

Top
#2252353 - 03/05/11 06:22 PM Re: Difference between Dorman 615-175 and 615-178? [Re: TopazSparrow]
TopazSparrow Offline
Stranger

Registered: 02/14/11
Posts: 6
Loc: Canada
It's running decently and there are no leaks. Whatever the difference is in the 615-175 and the 615-178's are it made all the difference on my 1996 Crown Vic.

I'm getting a CEL now though and the car sluggish. Idle's well, drives well, but if you jab the throttle from idle it kind of stutters or chatters. Looking into how to pull the codes now

Thanks for all the help guys.

Top
#2252560 - 03/05/11 11:06 PM Re: Difference between Dorman 615-175 and 615-178? [Re: TopazSparrow]
BlaineB Offline
Over the Hill

Registered: 09/21/06
Posts: 4184
Loc: *
That is odd. The PI intake would sit much lower and required the bent water pump tube to clear. So one of these can't be a PI intake I would not think?

Were you able to return the one or did you have to buy both and you have the other lying around?

Top
#2252661 - 03/06/11 02:09 AM Re: Difference between Dorman 615-175 and 615-178? [Re: TopazSparrow]
aerocvpi96 Offline
Member

Registered: 10/25/10
Posts: 188
Loc: ohio, painsville, 44077
Dorman intakes are junk. compare the stock ford with the Dorman and you will see there too completely different animals. if i still had the pic i would show you the difference between the stock ford PI-NPI, and the Dorman's PI-NPI. all the Dormans i put on the 4.6ls were nothing but problem. if there wasn't a problems at first. they would come up 2-3 month later.
_________________________

1996 P71 120k
1986 buick T-Type 65k
1986 ford F-350 with EFI conversion 28k

Top
#2252666 - 03/06/11 02:18 AM Re: Difference between Dorman 615-175 and 615-178? [Re: BlaineB]
aerocvpi96 Offline
Member

Registered: 10/25/10
Posts: 188
Loc: ohio, painsville, 44077
Originally Posted By: BlaineB
That is odd. The PI intake would sit much lower and required the bent water pump tube to clear. So one of these can't be a PI intake I would not think?

Were you able to return the one or did you have to buy both and you have the other lying around?


the Dorman PI intake sit the same as the NPI, and the NPI sit even higher. Dorman intakes will make the car runs sluggish because the way the intake is design. there way different then the factory ford.
_________________________

1996 P71 120k
1986 buick T-Type 65k
1986 ford F-350 with EFI conversion 28k

Top
Page 1 of 2 1 2 >



Moderator:  dRock96Marquis, Liquid 
Who's in Chat??
Google!
Who's Online
14 registered (124neta, 2000TownCar, 09mnsp, Benno, a_d_a_m, AlexPanther, 1 invisible), 77 Guests and 139 Spiders online.
Key: Admin, Global Mod, Mod
Shout Box

Email Login
EMail Login Name
Password
 New users, sign up!
Top Posters (30 Days)
road_pizza 290
a_d_a_m 257
Chicago2VP71 204
Moby_Vic 196
BigMerc96 194
Ezbok58a 172
aknox077 152
BigNSlow 135
Chaplian 119
ponyguy 118
Featured Member
Registered: 03/22/10
Posts: 586





Copyright 2000-2013 by Crownvic.net and Steve Spaulding. All Rights Reserved.
The photographs, graphics and data contained in this Web site are the properties of the contributors, or Crownvic.net and may not be used without expressed written consent.
Crownvic.net is not affiliated with the Ford motor company.

Happily consuming the fuel saved by Prius owners!