Lost Boost

PSI D on a TA/FC it has lost its boost at stage RPM still gives good boost on the run... has anyone any thoughts... Thanks

 

If its old, maybe it needs new coating,has it been recertified? thats when psi finds things wrong with the blower.

 

Yep recoated at last recert done 20 laps tops since done...

 

did you check the inner burst pannel? intake gaskets?

 

check the inner burst panel after run it is ok, gaskets are o rings seems all ok. just been looking at data and as motor is coming to stage rpm through the 4000 rpm range it shows 2.5 to 3 lbs then it drops off again to 0. it used to have 8 to 9lb at 6000. it has 50 lb at the finish..

 

How about the o rings under the blower on the plate? (Both sides)

 

cool good thought will have to check car is still on the other side of country be about a week or so getting home will look then and let you know. Thanks

 

Thanks Eli and Will hope to be able to find it from there, Will it is the same cam but it has been in and out a few times but with out changing its timing i check its degree's on every installation. Thanks Again

 

Has your actual performance suffered? If not, you may just have a bad boost sensor?

 

Lonnie car ran PB of 5.703 on the weekend however i find that i have had to drop the fuel flow volume at stage a considerable amount (by about a third) to keep the motor alight indicating to me that it may have lost the boost??

 

Check for leaks on the line going from the manifold back to the data logger

 

Have you talked to Roger @ PSI about this?

 

Lonnie i haven't talked to Roger yet i will check the o rings etc first B4 ringing him.

 

old trick

Stu; after checking flatness of the manifold surface and replacing the o-ring, see if you can find "toolmakers blue dye". We yanks call it Dykem, it is for layout to see scribe lines.
I'm sure you have the equivelant. It comes in spray or brush in cap, cans. Do the whole surface of the manifold.
Being an old clutch grunt, I know you'll find faint blue stains at the back of the manifold dribbling down, if the leak is under the blower from the alcohol.
Now I'm glad I didn't get to go 'cause of the rain policy B.S.
Old tricks from the Old guy........

 

Hi Uncle Bob
Thanks for the tip i have the dye will do and see... yep you didnt miss much with all the rain they should have run sun and then monday... long way to go for 2 laps i guess if we made some more power it would have been more laps !!! couldnt beat Bens 5.56.

 

Stuart:

I deleted all of this post and PM'd it to you instead.

No need to spill all the beans here. I don't mind helping the Aussie's in private, though. Besides, it was a long winded rant.

I may go there for a visit some day and see how the boys are making out.

RG

 

Randy
thanks for the honest coments makes sence to me. will let you know how i get on.
Rolme

 

Hey Randy, I like your style! You might like to know that this car is running 125% o.d., but what you said has a bunch of merit. Stuart, remember what I said to you earlier that day......

 

I've run Shane Sanford's deal at 92% and now 125% with a similar spool I made for his BV. Same rules apply.

Keep telling Stuart I said to not let those guys fill his head with mush. He's closer than he thinks.

RG