The Chronicles of SneakySnake Vol III

[EX1]

Damn that was quick turnaround. Why not do the bushing upgrade to both intake and exhaust rockers to eliminate needle bearings altogether?

[SRT_BluByU]

After all that work i might bet cost v likely hood of failure..

Gonna be an awesome build slowhatch! Each time i’ve commissioned Prefix to do something, the work has come out excellent and exceeded my expectations. I bet the same for you!

[slowhatch]

Damn that was quick turnaround. Why not do the bushing upgrade to both intake and exhaust rockers to eliminate needle bearings altogether?

I asked Prefix the same.

They basically said they've never, ever, seen an intake side rocker failure (and that the intake rocker is identical to the gen 3 rocker/bearing setup and "you've never seen those fail have you?"). I basically trusted in Scott/Dick's experience and assessment.

[slowhatch]

I appreciate all of your positive comments I can't wait to have the car back. I stopped by the hospital to take a peek at her today, she's got good suite mates...

[slowhatch]

Wanted to share a few nuggets of info that I found very interesting since its relevant at the moment.

First off, there's a fellow viper chap out in Austin (whom I should buy a beer for all the education/enjoyment I've received from his effort), who put together an awesome set of videos for our community some years back. He's got about 17 in total, going over every nut and bolt of rebuilding his gen 2 GTS after a motor failure. It covers everything from engine diagnosis, to removal, to teardown, to machine work, to re-assembly, I mean EVERYTHING. If you've ever wanted to see someone teardown and rebuild a Viper motor on video, I highly recommend watching these vids (I spent about a week going over them some time back).



Here is the playlist of all 17 videos: https://www.youtube.com/playlist?lis...omvzndftO3c_j9

Also this was a great thread (and big thanks to Greg Good for pushing this narrative back in the day) on the cross-drilled crank issues on the V10s. There are a lot of in thread links in that one with good info as well.

https://driveviper.com/forums/thread...-bearing-setup

[99RT10]

Hey Slowhatch, what was the cost to upgrade the exhaust rockers? Done at Prefix?

Your car will be faster, stronger, better than before!!!

[slowhatch]

Hey Slowhatch, what was the cost to upgrade the exhaust rockers? Done at Prefix?

Your car will be faster, stronger, better than before!!!

It was around $300

[kriskyk]

I wonder if there are options for drop in valvetrain for stock vipers as preventive measures?

[SRT_BluByU]

Dont think the ramp rates of the stock cam would necessitate that.. slowhatch has had a hot bump stick in for awhile now!

[kriskyk]

Dont think the ramp rates of the stock cam would necessitate that.. slowhatch has a had a hot bump stick in for awhile now!

That's a good point!

[ACRSNK]

Very cool

[EX1]

Compression ratio altered at all with the new Mahle's? I assume you stayed somewhere around stock for pump gas use. Are you going to try a new set of headers/collectors to help with the exhaust issue?

Excited to see all this come together for you! Thanks for letting us follow along!

[FrgMstr]

Tuesday this week, 1 week after my parts got there, I was greeted with this beautiful sight! These guys must have this stuff down to a science over there.

550 cubic inches of pure badassery!

She's headed for break-in and engine dyno next

This is getting exciting!

[slowhatch]

Compression ratio altered at all with the new Mahle's? I assume you stayed somewhere around stock for pump gas use. Are you going to try a new set of headers/collectors to help with the exhaust issue?

Excited to see all this come together for you! Thanks for letting us follow along!

I think with the Cometic HG used the actual ratio came out to 10.48:1, per Scot. Its a hair less than stock (10.5:1).

I'm going to try to clean up the flanges and metal/metal seal areas on the Belangers and see if that will work. If not, I may consider moving to ARH.

[Thawk97]

Love the photos - so fun to follow

[Jack B]

I think with the Cometic HG used the actual ratio came out to 10.48:1, per Scot. Its a hair less than stock (10.5:1).

I'm going to try to clean up the flanges and metal/metal seal areas on the Belangers and see if that will work. If not, I may consider moving to ARH.

Per the build sheet mine was 10.7.

Belangers - there is a standard soft/thick copper gasket that dead seals that leak.i bought them from Summit. I may have one, if I do, i will send it.

[slowhatch]

Per the build sheet mine was 10.7.

Belangers - there is a standard soft/thick copper gasket that dead seals that leak.i bought them from Summit. I may have one, if I do, i will send it.

I'm intrigued by the gasket comment, if you can find it and tell me the PN# I'd be forever grateful!

[Jack B]

I'm intrigued by the gasket comment, if you can find it and tell me the PN# I'd be forever grateful!

I had Belangers on a 94, 97 and the G5, they all leaked without that gasket. I won't be back till Sunday, pretty sure I have one.

[CajunViper09]

I'm intrigued by the gasket comment, if you can find it and tell me the PN# I'd be forever grateful!

A shot in the dark at which gasket he is referring to.

https://www.summitracing.com/parts/sce-4159

[slowhatch]

A shot in the dark at which gasket he is referring to.

https://www.summitracing.com/parts/sce-4159

Appreciate it but the leak I'm having isn't on the header flange, I believe its downstream in the merge collectors and/or midpipe area.

[Slithr]

Thanks for the detailed documentation of build, looking forward to the road tests! Hope to hear it at an upcoming event (if that's still a thing).

[Jack B]

My last Belanger assemble was in 2017, here is what I believe is accurate:

J Pipe Flange 3”opening/3 Bolt
I used the solid copper in the past, however, they were on back order so I used the solid aluminum in 2017. This flange is best assembled outside the car and inserted into the car. I should be able to post the drawing of the Belanger flange tomorrow. These are not the only gaskets that will work, all these were ordered from amazon.

1. Solid Copper - Acouto 2 PCS 3 Inch Copper Header Exhaust Collector Gaskets.
2. Solid Aluminum – Mr. Gasket ALM Tri Col Gaskets-3.00" Dia


3&2 Into 2 (2-1/4”Opening-2 Bolt) This is two sets of flanges per side:

1. Vibrant 1456 2-Bolt High Temperature Exhaust Gasket

Belanger Flanges.jpg

[slowhatch]

My last Belanger assemble was in 2017, here is what I believe is accurate:

J Pipe Flange 3”opening/3 Bolt
I used the solid copper in the past, however, they were on back order so I used the solid aluminum in 2017. This flange is best assembled outside the car and inserted into the car. I should be able to post the drawing of the Belanger flange tomorrow. These are not the only gaskets that will work, all these were ordered from amazon.

1. Solid Copper - Acouto 2 PCS 3 Inch Copper Header Exhaust Collector Gaskets.
2. Solid Aluminum – Mr. Gasket ALM Tri Col Gaskets-3.00" Dia


3&2 Into 2 (2-1/4”Opening-2 Bolt) This is two sets of flanges per side:

1. Vibrant 1456 2-Bolt High Temperature Exhaust Gasket

Jack, you the man, thank you!

Ordered 4 of the 1456 (2.25" ID) Vibrant gaskets from Summit, but the Acouto coppers were too long of a wait on shipping.



I ended up finding some "Mr Gasket Copper 3.00" and ordered those on Amazon Prime;

[slowhatch]

Motor made its way into the dyno room for break-in yesterday. They usually spend an hour or so on break in oil going through computer controlled varied rpm and load scenario. Then it goes for a few power pulls to make sure everything is as expected. If all's well on dyno, a compression and leakdown test is next, fluids get drained, then crating and shipment.

[Space Truckin]

Sweet Buttermilk Biscuits...