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Search: Posts Made By: The Mad Porter
Forum: Engine Tech   07-29-2016, 05:05 PM
Replies: 7
Views: 437
Posted By The Mad Porter
Cool The particular carb I am talking about is near a...

The particular carb I am talking about is near a grand as it is a custom built high end carburetor.

As to your build:

Output depends entirely on how well your heads work.
Not enough exhaust...
Forum: Engine Tech   07-29-2016, 12:44 PM
Replies: 4
Views: 207
Posted By The Mad Porter
Cool Given that SFT lobes are generally more...

Given that SFT lobes are generally more aggressive than HFT lobes they need more spring.

On an aggressive HFT cam core tight lashed SFT lifers are no more likely to float than HFT lifters BUT the...
Forum: Engine Tech   07-28-2016, 01:40 PM
Replies: 4
Views: 207
Posted By The Mad Porter
Cool By 0 lash do you mean NO lifter plunger preload? ...

By 0 lash do you mean NO lifter plunger preload?

In HFT lifters with just a light plunger retaining clip you run the risk of lifter pump up blowing the plunger past the clip taking the clip with...
Forum: Engine Tech   07-26-2016, 08:18 PM
Replies: 6
Views: 258
Posted By The Mad Porter
Cool The black TFS rockers are made by crane. Same...

The black TFS rockers are made by crane. Same rocker. Buy a half set. The old blue FRPP rockers were as well.




S
Forum: Engine Tech   07-26-2016, 05:42 PM
Replies: 6
Views: 326
Posted By The Mad Porter
Cool The entire freeze plug and screw in plug kit from...

The entire freeze plug and screw in plug kit from Melling with Brass freeze plugs is $15.00 ish.



S
Forum: Engine Tech   07-24-2016, 09:08 PM
Replies: 17
Views: 800
Posted By The Mad Porter
Cool Yup especially on the intake side. Loss of valve...

Yup especially on the intake side. Loss of valve train control and loss of power comes on long before audible valve float / bounce or lifter pump up.



S
Forum: Engine Tech   07-24-2016, 02:03 PM
Replies: 17
Views: 800
Posted By The Mad Porter
Cool It is not a surprise that the additional...

It is not a surprise that the additional regulator was the culprit.

Do you have a known good carburetor to switch out?



S
Forum: Engine Tech   07-23-2016, 03:49 PM
Replies: 17
Views: 800
Posted By The Mad Porter
Cool Is your fuel pressure regulator a dead head style...

Is your fuel pressure regulator a dead head style or bypass?

Dead head units can sometime be restrictive.



S
Forum: Engine Tech   07-23-2016, 01:26 PM
Replies: 17
Views: 800
Posted By The Mad Porter
Cool Which EFI intake adapter are you using? ...

Which EFI intake adapter are you using?

Price Motorsports has their 4 hole 1 5/8" throttle bore unit which I found caused our EFI crate engines to pull too much WOT vacuum during dyno pulls.

I...
Forum: Engine Tech   07-21-2016, 07:26 PM
Replies: 7
Views: 437
Posted By The Mad Porter
Cool The large diameter of the venturi(s) as well as...

The large diameter of the venturi(s) as well as poor booster signal strength in an 850 carb is a no go in a lead sled like yours. Whats more your HP output at best is going to be 440 to 450 HP if the...
Forum: Engine Tech   07-21-2016, 02:25 PM
Replies: 17
Views: 800
Posted By The Mad Porter
Cool That combo should pull like a freight train to 5K...

That combo should pull like a freight train to 5K rpm.

Spring number?
Installed height?

Total ignition timing?

Fuel pump type?
Forum: Engine Tech   07-18-2016, 03:00 PM
Replies: 3
Views: 255
Posted By The Mad Porter
Cool What is the depth of the V notch on the iron CJ...

What is the depth of the V notch on the iron CJ heads less the head gasket thickness???

I typically remove 50% of the deck cut from the intake side of the heads if removing more than .035"

In...
Forum: Engine Tech   07-17-2016, 08:14 PM
Replies: 1
Views: 204
Posted By The Mad Porter
Cool The method is correct. Keep preload to between...

The method is correct. Keep preload to between 1/4 and 1/2 turn. Too much pre-load + too little spring tension = lifter pump up.

When building I order the push rods a tic long and then fine tune...
Forum: Engine Tech   07-17-2016, 08:09 PM
Replies: 3
Views: 255
Posted By The Mad Porter
Cool A rough guide is the V notch in the deck exhaust...

A rough guide is the V notch in the deck exhaust side center.

OEM is is typically .105" deep on every head I have measured.



S
Forum: Engine Tech   07-15-2016, 07:08 PM
Replies: 1
Views: 227
Posted By The Mad Porter
Cool My guess is pattern or mold numbers. I have cores...

My guess is pattern or mold numbers. I have cores here with 32 through 36. There are no differences between D3 heads that I have been able to discern other than 7/16" accessory bolt holes on the...
Forum: Engine Tech   07-14-2016, 12:21 PM
Replies: 14
Views: 707
Posted By The Mad Porter
Cool The many solutions offered here will certainly...

The many solutions offered here will certainly work.

The problem as I see it is that the PI heads use the shorter over all valve length of the later heads. You have the early long valves.
...
Forum: Engine Tech   07-07-2016, 12:31 PM
Replies: 24
Views: 1,134
Posted By The Mad Porter
Cool Get a quality 3 angle valve job, back cut intake...

Get a quality 3 angle valve job, back cut intake and exhaust valves & remove sharp machining ridges in bowls.

Open the choke to 90% on the intake side. Same with the exhaust.

Work with in 1 to...
Forum: Engine Tech   07-07-2016, 12:18 PM
Replies: 12
Views: 535
Posted By The Mad Porter
Cool RM makes an excellent point here. Production...

RM makes an excellent point here.

Production replacement camshaft. Close enough. Pull the trigger.





S
Forum: Engine Tech   07-03-2016, 07:49 PM
Replies: 4
Views: 469
Posted By The Mad Porter
Cool If you are going to huff it leave the port...

If you are going to huff it leave the port mismatch and use a CJ style intake gasket. 208A Mr. Gasket comes to mind. Felpro 1231s would work as well.



S
Forum: Engine Tech   07-03-2016, 12:42 PM
Replies: 4
Views: 469
Posted By The Mad Porter
Cool Which intake are you going to use? The Track...

Which intake are you going to use?
The Track heat R intake (Mafia) is made for use with the CNC 325's.

The TFS heads are on passenger car port centers just like the AFR heads.



S
Forum: Engine Tech   06-29-2016, 12:49 PM
Replies: 12
Views: 535
Posted By The Mad Porter
Cool I have checked many factory cams on performance...

I have checked many factory cams on performance trends software with a cam doctor fixture.

Cam specs @ .050" lifter rise when installed straight up:

IVO is -13.5 BTDC ( - indicates ATDC)...
Forum: Engine Tech   06-28-2016, 01:18 PM
Replies: 2
Views: 226
Posted By The Mad Porter
Cool A proper thermostatic clutch fan, shroud and...

A proper thermostatic clutch fan, shroud and aluminum radiator should have no issues with idle temp creep. Try removing the pusher fans.

Double check your timing as Dan suggested as well.


I...
Forum: Engine Tech   06-28-2016, 01:11 PM
Replies: 55
Views: 2,673
Posted By The Mad Porter
Cool In Australia... S

In Australia...




S
Forum: Engine Tech   06-25-2016, 07:04 PM
Replies: 1
Views: 177
Posted By The Mad Porter
Cool The 68 and 69 BBF's used a short water pump....

The 68 and 69 BBF's used a short water pump. Corresponding damper and pulleys are required. The early damper is a 3 bolt with alternator groove on the damper.

Pump and damper can be found here:
...
Forum: Engine Tech   06-23-2016, 01:53 PM
Replies: 55
Views: 2,673
Posted By The Mad Porter
Cool The fun factor on the stroker BBF powered factory...

The fun factor on the stroker BBF powered factory five and Superformance Cobras is off the charts however...

After building several mid 600 hp street strokers (mid 550 RWHP NET) for various local...
Showing results 1 to 25 of 500

 
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