Why is there never enough time/ The Ohio mile

[seanm]

Need all the bolts it can get! Not sure how the extra bolts are added. It does look like they go through the water jackets in the head and are sealed with epoxy. I'll ask Courtney sometime how they do it.

Heck, I'm just trying to get it to run as good as it did in 2005.

[milner351]

Sean - what head bolt / stud torque are you using?

In some cases for direct injected diesels, head gasket issues have been cured by swapping over to ARP head studs instead of bolts, and following the arp torque instructions instead of the factory bolt torques.

If you're still running bolts - this may be an alternative to try before pulling the engine out, dis-assembling - and getting the block machined for additional head bolts - custom gaskets, etc.

[seanm]

Using ARP studs now torqued to 110ft/lbs.

There was an overboost issue that probably caused the gasket failure. The old Cad has been reliable in the past at the level I'm trying to get it to again. Been dealing with some mistakes on my part and some new combo issues.

Doubt I will add more head studs if it means sealing it with epoxy. Too much hassle. Trying to get back to around 800hp at the tires like before. Going much higher on power is where the block needs tons of work to live. The main webs start to pull out somewhere north of 1200 flywheel hp I've been told.

Anyway, will keep trying to make a decent pass. Might back it down to 5 psi and hope to at least be WOT at the finish line instead of coasting.

Hope to see everybody in July.

[miketblsr]

Using ARP studs now torqued to 110ft/lbs.

There was an overboost issue that probably caused the gasket failure. The old Cad has been reliable in the past at the level I'm trying to get it to again. Been dealing with some mistakes on my part and some new combo issues.

Doubt I will add more head studs if it means sealing it with epoxy. Too much hassle. Trying to get back to around 800hp at the tires like before. Going much higher on power is where the block needs tons of work to live. The main webs start to pull out somewhere north of 1200 flywheel hp I've been told.

Anyway, will keep trying to make a decent pass. Might back it down to 5 psi and hope to at least be WOT at the finish line instead of coasting.

Hope to see everybody in July.

Dave and I started using the VHT copper spray on our head gaskets it is really really strong. I highly recomend it. Here is the link

http://www.vhtpaint.com/products/coppergasketcement/

[DanStokes]

Same idea as Mike posted but I've always used K&W Copper Coat. It works great, too - but I've never run boost.

Dan

[wyrmrider]

We ran 50 lbs boost on a 4 bolt motor using head bolts (twin turbos-alcohol 210 cu in over 1000 hp for over an hour on the Champion Spark Plug dyno with Dick Jones at the controls))
we put Bellevue washers in the o ring groves
German made
water passages were o-ringed- dry deck
the head danced a little but no failures
hylomar works well
I worked on Mickey Thompson 's Hemi head conversion for 4 bolt blocks (could work on most by drilling bolt holes in different places but only produced for FE Ford and Pontiac where they won the NHRA nationals. Olds and Cad did not get past the drawing board
No particular gasket problems but the decks were extra thick

[seanm]

Thanks for all the input on what works for you guys. might try them if problems continue. Hoping this was an overboost fluke. Also noted the last tube of permatex hylomar was not the same as the older tubes I had used before. Found out permatex changed the formula. Found original hylomar universal blue now. Seems to have much more adhesion than the permatex version. Been using bellville washers also. Will see what happens soon.

[wyrmrider]

hylomar

Hylomar was mfg by Rolls Royce (patent which may have expired)
and shipped to McCord gasket in drums for packaging.
I do not know that Permatex could change the formula without Rolls Royce OK
Is Permatex actually manufacturing the product?

[JoeyG]

Interesting..... a head bolt girdle......... so how did it work out for him? Still lifting problems?

I only saw it a couple of times at car cruises. Never actually saw a pass, it was in a Buick Apollo (nova platform?).

[seanm]

Hylomar was mfg by Rolls Royce (patent which may have expired)
and shipped to McCord gasket in drums for packaging.
I do not know that Permatex could change the formula without Rolls Royce OK
Is Permatex actually manufacturing the product?

I don't know, but the product from Hylomar is much different than the hylomar from Permatex.

[wyrmrider]

Hylomar website says that Hylomar is the only mfg of Hylomar
also that Hylomar is licensed from RR
no idea about Permatex version

[seanm]

Another year, the same time problems, LOL.

Have the car back on stands and looking things over. Last summer was hard on the car with several runs that over-boosted before solving the issue. The last few runs while better in speed showed the next problem in some horrible vibrations that I think was the driveshaft starting to jump rope. Making changes so the driveshaft is much shorter and larger diameter.


Hope to switch it to EFI over this winter. Have some fabricobbing to do under here


The engine is apart. The poor tune up and overboost issues walked the caps hard enough to loosen them in the registers. Block is getting checked out now. A few cam lobes look strange to me also. Lifters look like new?


Once again, April seems so close already. These issues along with a list of items to change to suit the rule book will make for a busy winter.


See you soon.

[JoeyG]

What were the over-boosting issues you had? Boost controller or wastegate issues? I can't wait to see that thing flying down the track again.

[seanm]

Wastegate placement wasnt right. Hope to do better next year.

[1 fast evo 2]

I forget, how big is the turbine housing and compressor for that matter?
How big is the gate?
Did you figure out what was vibrating so bad?

Mike Reichen