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Search took 0.02 seconds. Search: Posts Made By: darbikrash
Forum: THE LOBBY 04-22-2024, 04:50 PM
Replies: 115
Views: 12,490
Posted By darbikrash
Agreed. In Post 103 above we showed a best...

Agreed.

In Post 103 above we showed a best of 657 HP (first graph) on the 4X heads with the pulley slipping. I'm confident that had we not had the pulley slip we would have touched 700 due to...
Forum: THE LOBBY 04-21-2024, 05:18 PM
Replies: 115
Views: 12,490
Posted By darbikrash
I've had a chance to dig into some of the Holley...

I've had a chance to dig into some of the Holley EFI datalogs from the dyno session earlier this week, and though I'd post up some of the plots.

This shows engine vacuum at idle converted to...
Forum: THE LOBBY 04-18-2024, 07:40 PM
Replies: 115
Views: 12,490
Posted By darbikrash
So it was back to the dyno last Tuesday for round...

So it was back to the dyno last Tuesday for round 3 of the blower wars. This time I think we got a decent outcome and I am very happy with the results.

There were several differences and upgrades...
Forum: EFI Tech 04-17-2024, 03:57 PM
Replies: 57
Views: 3,041
Posted By darbikrash
For the wiring, I started with Holley...

For the wiring, I started with Holley mini-harness P/N 558-431 and cutoff the 3 pin cam sync connector, replacing it with a 10 pin connector to plug directly into the dual sync. The provided crank...
Forum: EFI Tech 04-17-2024, 11:03 AM
Replies: 57
Views: 3,041
Posted By darbikrash
Just got off the dyno yesterday using the crank...

Just got off the dyno yesterday using the crank trigger setup shown in post #35 of this thread. The engine uses a Holley dual sync for the cam sensor. As we had problems with the dual sync crank...
Forum: EFI Tech 04-07-2024, 03:50 PM
Replies: 57
Views: 3,041
Posted By darbikrash
I recently converted a dual sync setup to a...

I recently converted a dual sync setup to a dedicated crank trigger. I thought I'd post up a few pics on my setup.

I am using the dual sync now for cam signal only, with a COP/CNP 8 coil setup on...
Forum: Pontiac - Boost 03-30-2024, 11:58 AM
Replies: 2
Views: 301
Posted By darbikrash
I’ll throw out some thoughts, not meant as...

I’ll throw out some thoughts, not meant as gospel, just a perspective.

I think it depends on the type of forced induction. For a turbo car, I’d think the higher compression/lower boost approach...
Forum: THE LOBBY 03-29-2024, 11:12 AM
Replies: 115
Views: 12,490
Posted By darbikrash
You're exactly right, the idle bypass is open...

You're exactly right, the idle bypass is open anytime there is vacuum greater than 10" /hg. I have the vacuum modulator calibrated where it starts opening around 8.5"-9", and is fully open at 10"....
Forum: THE LOBBY 03-28-2024, 05:32 PM
Replies: 115
Views: 12,490
Posted By darbikrash
So a new dyno session has been scheduled and I...

So a new dyno session has been scheduled and I have made quite a few upgrades, and have some new things to test. For this next go around I am bringing two complete blower setups, the first as before,...
Forum: THE LOBBY 03-28-2024, 05:08 PM
Replies: 115
Views: 12,490
Posted By darbikrash
Yes, plenty of news, most of it good. I've been...

Yes, plenty of news, most of it good. I've been pretty busy with all this so here are a few updates.

I went back to the dyno after the failed Evolution lifters, I swapped out the lifters with...
Forum: Pontiac - Street 03-18-2024, 03:57 PM
Replies: 58
Views: 2,430
Posted By darbikrash
It's a blower motor which requires more spring...

It's a blower motor which requires more spring pressure than N/A.

The Evolution lifters are rated to 450#.
Forum: THE LOBBY 02-20-2024, 07:21 PM
Replies: 115
Views: 12,490
Posted By darbikrash
Dyno session was yesterday, at least part of it....

Dyno session was yesterday, at least part of it. Brought everything to Westech and had the N/A motor up on the dyno and ready to fire within about 90 minutes. As this is a brand new engine, the plan...
Forum: THE LOBBY 02-06-2024, 01:57 AM
Replies: 115
Views: 12,490
Posted By darbikrash
LoL. It’s like chicken pox. I think it’s...

LoL. It’s like chicken pox. I think it’s contagious as the other valve cover got them too.
Forum: THE LOBBY 02-05-2024, 06:23 PM
Replies: 115
Views: 12,490
Posted By darbikrash
I thought of that too. Maybe I'll reach out to...

I thought of that too. Maybe I'll reach out to him and see if he has an interest.
Forum: THE LOBBY 02-04-2024, 05:49 PM
Replies: 115
Views: 12,490
Posted By darbikrash
I think I'm almost ready for the dyno session...

I think I'm almost ready for the dyno session coming in a couple of weeks.

The plan is to break-in the engine N/A, then switch over to the forced induction pulls. To accomplish this, I took a...
Forum: THE LOBBY 01-20-2024, 09:35 PM
Replies: 115
Views: 12,490
Posted By darbikrash
Getting ready for the dyno session next month at...

Getting ready for the dyno session next month at Westech. Today I pressure checked the fuel rails and wired up the injector harnesses. Packages pretty nice under the blower. The setup on the right is...
Forum: THE LOBBY 01-08-2024, 07:02 PM
Replies: 115
Views: 12,490
Posted By darbikrash
I am creating an interest list, if anyone thinks...

I am creating an interest list, if anyone thinks they may want one, please send me a PM with your contact info and I will keep you posted on progress.

I am scheduled for two days of engine dyno...
Forum: THE LOBBY 01-04-2024, 01:47 AM
Replies: 115
Views: 12,490
Posted By darbikrash
Centrifugals are a good option as well. They do...

Centrifugals are a good option as well. They do have very different boost characteristics as compared to twin screw blowers. Typically, centrifugals make their boost at a much higher RPM, with little...
Forum: THE LOBBY 12-30-2023, 06:15 PM
Replies: 115
Views: 12,490
Posted By darbikrash
Not easily, no. These types of twin screw...

Not easily, no. These types of twin screw superchargers take the air in through the ends, in this case the front, and move the air axially (lengthwise) down the length of the rotors and discharges...
Forum: THE LOBBY 12-28-2023, 04:59 PM
Replies: 115
Views: 12,490
Posted By darbikrash
An HEI distributor will not fit- but I don't...

An HEI distributor will not fit- but I don't think you want one. The best solution is a Holley (MSD) "Dual Sync" distributor which does fit, as this gets you not only ignition, but crank and cam...
Forum: THE LOBBY 12-25-2023, 02:05 PM
Replies: 115
Views: 12,490
Posted By darbikrash
Not sure about NHRA racing, but the TVS 2650 will...

Not sure about NHRA racing, but the TVS 2650 will support 1000+ flywheel HP.
Forum: THE LOBBY 12-24-2023, 08:42 PM
Replies: 115
Views: 12,490
Posted By darbikrash
Yes, separate 6 rib serpentine for accessories....

Yes, separate 6 rib serpentine for accessories. The blower drive pulley is a dedicated 8 rib serpentine that has its own HD automatic belt tensioner. This allows you to change blower pulleys (and...
Forum: THE LOBBY 12-24-2023, 06:48 PM
Replies: 115
Views: 12,490
Posted By darbikrash
Still working on pricing. It will be comparable...

Still working on pricing. It will be comparable to an aftermarket kit for an LS- certainly not more.

We have two complete blowers with all parts machined on the 5 axis, one is the 455 which will...
Forum: THE LOBBY 12-24-2023, 01:41 PM
Replies: 115
Views: 12,490
Posted By darbikrash
New Pontiac project

We’ve closed out production of the Bathtub intakes, and unless a substantial demand pops up for more, these are sold out and I don’t foresee any more will be made.

Thanks to all who contributed to...
Forum: Pontiac - Street 11-05-2023, 01:32 PM
Replies: 46
Views: 3,777
Posted By darbikrash
As it was explained to me they did run A-B...

As it was explained to me they did run A-B comparisons of coated and non coated lifters on the Spintron. During the “abusive testing” phase several extreme conditions were tested. One test...
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