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Search: Posts Made By: 1986Scarab1
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Forum: General Q & A
07-15-2020, 12:40 AM
Replies: 19
Views: 3,955
Posted By Griff

They do make Mirage Plus props in as small of a...

They do make Mirage Plus props in as small of a diameter as 14.375"
Forum: General Q & A
07-09-2020, 06:53 AM
Replies: 19
Views: 3,955
Posted By SB

I did chime in with the info. Lol. I’ll be more...

I did chime in with the info. Lol. I’ll be more specific There isn’t one on the Tbolt IV used on black motors. There is an added on ‘over speed’ module on the Merc racing blue motors that use the...
Forum: General Q & A
07-09-2020, 06:33 AM
Replies: 19
Views: 3,955
Posted By oconnor marine

2 or 4 bolt mains? The Vortec HD version 350...

2 or 4 bolt mains?
The Vortec HD version 350 uses a 4-Bolt main block, upgraded exhaust valves and cylinder heads for heavy duty applications.
You can take the serial numbers of the block and...
Forum: General Q & A
07-09-2020, 06:17 AM
Replies: 19
Views: 3,955
Posted By SB

There is no rev limiter with the Tbolt IV...

There is no rev limiter with the Tbolt IV ignition.

Griff is correct with rpm range, however, experimenting with props may changevthis a bit.

Small 20ft hoat I tune on/work on with stock 5.7...
Forum: General Q & A
07-09-2020, 12:36 AM
Replies: 19
Views: 3,955
Posted By Griff

The cam is spec'd at 1500-5500 rpms....

The cam is spec'd at 1500-5500 rpms. https://www.summitracing.com/parts/cca-k12-417-8

There should not be any issue spinning to 5200-5400rpms.
Forum: General Q & A
07-06-2020, 02:57 PM
Replies: 6
Views: 1,160
Posted By SB

I still can. I'm old and crusty though. :) Hah.

I still can. I'm old and crusty though. :) Hah.
Forum: General Q & A
07-06-2020, 02:12 PM
Replies: 6
Views: 1,160
Posted By zz28zz

I remember a time when every mech I knew could...

I remember a time when every mech I knew could re-build/adj a Q-jet with their eyes closed. Quickly becoming a lost art nowadays.
Forum: General Q & A
05-05-2020, 07:23 AM
Replies: 11
Views: 2,341
Posted By flashgordon

https://cimg5.ibsrv.net/gimg/www.offshoreonly.com-...

https://cimg5.ibsrv.net/gimg/www.offshoreonly.com-vbulletin/640x480/img_0843_b9d943bf855fdd3146b221f3291fb13ebf49528f.jpg



i have stainless line from fuel filter to carbs, easy to work with,.
Forum: General Q & A
05-05-2020, 06:35 AM
Replies: 11
Views: 2,341
Posted By SB

Believe it or not, some steel lines are still...

Believe it or not, some steel lines are still available from Merc.
If interested, Click here;
https://www.mercruiserparts.com/mercury-marine-parts-lookup-drawings

Once you are in section for...
Forum: General Q & A
05-05-2020, 04:46 AM
Replies: 11
Views: 2,341
Posted By motor

3/8" inverted flare is what is on a lot of fuel...

3/8" inverted flare is what is on a lot of fuel fittings. The threads measure closer to 5/8" . Auto parts stores have them . 3/8" inverted flare x 3/8" hose barb. My local O'reillys' has them but...
Forum: General Q & A
05-04-2020, 09:00 PM
Replies: 11
Views: 2,341
Posted By Unlimited jd

You’re looking for 3/8 flare by hose barb,...

You’re looking for 3/8 flare by hose barb, different from 3/8 npt and hard to find
Forum: General Q & A
02-13-2019, 08:44 PM
Replies: 18
Views: 6,575
Posted By Boater8987

That pump is 24 volts. Don't you need a 12 volt?

That pump is 24 volts. Don't you need a 12 volt?
Forum: General Q & A
02-09-2019, 07:49 PM
Replies: 18
Views: 6,575
Posted By mira boater

alex's parts valve springs allow you to use a cam...

alex's parts valve springs allow you to use a cam greater than .450 lift without machining the heads behive springs will work also
Forum: General Q & A
02-08-2019, 08:21 PM
Replies: 18
Views: 6,575
Posted By highplainsdrifter

very close

Those cams are pretty damn close. Durations at .050 is exactly the same, LSA is the same and lift is very damn close. For some reason the hotcam says its best suited for 1800-5800 RPM and the XM270HR...
Forum: General Q & A
02-08-2019, 05:33 AM
Replies: 18
Views: 6,575
Posted By ezstriper

I did a vortec head upgrade to a 350 2 years ago,...

I did a vortec head upgrade to a 350 2 years ago, also upgraded to a roller cam, I had comp do a special grind(no extra charge) to work with the vortec heads(has to stay under a certain lift) and...
Forum: General Q & A
02-07-2019, 08:58 PM
Replies: 18
Views: 6,575
Posted By mira boater

i have a xm270hr in my vortec 350 i have Alex's...

i have a xm270hr in my vortec 350 i have Alex's parts valve springs rpm intake stainless marine exhaust 3 seasons on it with no issues makes good power runs mid 60 in a 20 baja
Forum: General Q & A
07-18-2018, 10:16 PM
Replies: 28
Views: 2,706
Posted By SB

Fuel or ignition. Start digging and finding...

Fuel or ignition.

Start digging and finding the issue.

==============================
Few quick things and then keep digiging from there:
- Rubber fuel line from tank to the seperator/filter....
Forum: General Q & A
05-21-2018, 09:10 PM
Replies: 3
Views: 1,317
Posted By Tinkerer

You may have picked up something on the prop....

You may have picked up something on the prop. Prop hubs and engine couplers don't FIX themselves. If it was the coupler yhou would have smelled burnt rubber and once they blow the best you can do is...
Forum: General Q & A
05-07-2018, 06:07 AM
Replies: 28
Views: 2,706
Posted By phragle

Also what rpm are you running at top speed?? ...

Also what rpm are you running at top speed?? that cam states its from 1300 to 5500 rpm and if Griff hp guess is correct, you may be able to get into the low 60s with the right prop.
Forum: General Q & A
05-06-2018, 11:27 PM
Replies: 28
Views: 2,706
Posted By Griff

A 9 mph gain is huge. You probably added...

A 9 mph gain is huge. You probably added 100-140hp over what you had.
Old engine was probably tired so I'm betting you're in the 350-375hp range now.
Better keep some $$ set aside for an Alpha...
Showing results 1 to 20 of 20


 
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